List of novae in 2018

	Host galaxies of novae discovered in 2018
	Milky Way: 15 (30.6%); Andromeda Galaxy: 23 (46.9%); Messier 81: 8 (16.3%); Triangulum Galaxy: 1 (2.0%); Messier 83: 1 (2.0%); NGC 45: 1 (2.0%);

Last updated December 07, 2024

The following is a list of all novae that are known to have occurred in 2018. A nova is an energetic astronomical event caused by a white dwarf accreting matter from a star it is orbiting (typically a red giant, whose outer layers are more weakly attached than smaller, denser stars) Alternatively, novae can rarely be caused by a pair of stars merging with each other, however such events are vastly less common than novae caused by white dwarfs.

In 2018, 15 novae were discovered in the Milky Way, 14 being classical novae, and 1 being a dwarf nova of a previously known variable star, V392 Persei, which was discovered in 1972. An additional 23 novae were discovered in the Andromeda Galaxy, 8 in Messier 81, 1 in the Triangulum Galaxy, and 1 in Messier 83. A single luminous red nova was observed in NGC 45.

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The sky locations of the 15 known galactic novae in 2018. Red dots are classical novae, orange dots are dwarf novae, yellow dots are luminous red novae, and blue dots are recurring novae.

List of novae in 2018

In the Milky Way

Nova name	Discovery date	Constellation	Right ascension	Declination	Peak brightness (v)^[1]	Distance (light-years)^[2]	Absolute magnitude (v)	Nova type	Origin system identified?	Companion star spectral type^{[note 1]}
V357 Muscae ^[3]	2018/01/14	Musca	11^h 26^m 15.03^s	−65° 31′ 24.3″	6.5	11500+6900 −3100	−6.2+0.7 −1.0	Classical	Yes	F9V/G0V
V1661 Scorpii^[4]	2018/01/17	Scorpius	17^h 18^m 06.41^s	−32° 04′ 27.2″	10.2	?	?	Classical	Yes	?
FM Circini ^[5]	2018/01/19	Circinus	13^h 53^m 27.61^s	−67° 25′ 00.9″	5.9	9400+3700 −2100	−6.4+0.6 −0.7	Classical	Yes	G1V
V1662 Scorpii^[6]	2018/02/06	Scorpius	16^h 48^m 49.64^s	−44° 57′ 03.0″	10.1	?	?	Classical	Yes	?
V3664 Ophiuchi^[7]	2018/02/12	Ophiuchus	17^h 24^m 39.96^s	−24° 21′ 47.4″	12.5	45000+99999 −28000	−3.2+2.1 −1.7	Classical	Yes	M0II/III
V1663 Scorpii^[8]	2018/02/24	Scorpius	17^h 03^m 47.51^s	−38° 16′ 57.1″	12.3	3400+99999 −1800	2.2+1.6 −7.3	Classical	Maybe	?
V3665 Ophiuchi^[9]	2018/03/10	Ophiuchus	17^h 14^m 02.55^s	−28° 49′ 23.9″	9.4	?	?	Classical	Yes	?
V906 Carinae ^[10]	2018/03/20	Carina	10^h 36^m 15.43^s	−59° 35′ 53.7″	5.9	22000+99999 −17000	−8.2+3.7 −3.3	Classical	Yes	?
V435 Canis Majoris^[11]	2018/03/24	Canis Major	07^h 13^m 45.90^s	−21° 12′ 33.0″	12.0	?	?	Classical	Maybe	?
V5857 Sagittarii^[12]	2018/04/08	Sagittarius	18^h 04^m 09.45^s	−18° 03′ 55.9″	10.8	?	?	Classical	Yes	?
V392 Per^[13]	2018/04/29	Perseus	04^h 43^m 21.37^s	47° 21′ 25.9″	6.3	?	?	dwarf nova & nova	Yes	?
V408 Lupi^[14]	2018/06/03	Lupus	15^h 38^m 43.86^s	−47° 44′ 42.0″	9.0	2910+1700 −780	−0.8+0.7 −1.0	Classical	Maybe	K7V?
V613 Scuti^[15]	2018/06/29	Scutum	18^h 29^m 22.96^s	−14° 30′ 44.0″	10.3	?	?	Classical	Yes	?
V3666 Ophiuchi^[16]	2018/08/08	Ophiuchus	17^h 42^m 24.10^s	−20° 53′ 08.8″	9.0	?	?	Classical	No	?
V556 Normae^[17]	2018/10/13	Norma	16^h 14^m 32.92^s	−53° 30′ 14.7″	10.2	?	?	Classical	Yes	?

In the Andromeda Galaxy

Novae are also frequently spotted in the Andromeda Galaxy, and are even slightly more commonly found than in the Milky Way, as there is less intervening dust to prevent their detection. Furthermore, Andromeda is circumpolar for observers north of latitude +48-50, roughly the latitude of the Canadian-American border, allowing observers north of that to search for transients all year.

In 2018, 23 novae were seen in the Andromeda galaxy.

Nova name	Discovery date	Right ascension	Declination	Peak brightness (v)^[1]	Absolute magnitude (v)
PNV J00444425+4142449	2018/01/10	00^h 44^m 44.25^s	41° 42′ 44.9″	18.4	-6.1
PNV J00431577+4118393	2018/01/12	00^h 43^m 15.77^s	41° 18′ 39.3″	17.8	-6.7
PNV J00423439+4044255	2018/02/07	00^h 42^m 34.39^s	40° 44′ 25.5″	16.7	-7.8
PNV J00415059+4125499	2018/02/22	00^h 41^m 50.59^s	41° 25′ 49.9″	17.9	-6.6
PNV J00424041+4112522	2018/03/21	00^h 42^m 40.41^s	41° 12′ 52.2″	18.1	-6.4
PNV J00425509+4119009	2018/04/03	00^h 42^m 55.09^s	41° 19′ 00.9″	17.6	-6.9
PNV J00421895+4113524	2018/04/19	00^h 42^m 18.95^s	41° 13′ 52.4″	16.9	-7.6
PNV J00415353+4114121	2018/04/29	00^h 41^m 53.53^s	41° 14′ 12.1″	17.5	-7.0
PNV J00434212+4122349	2018/05/19	00^h 43^m 42.12^s	41° 22′ 34.9″	17.0	-7.5
PNV J00424144+4117377	2018/06/26	00^h 42^m 41.44^s	41° 17′ 37.7″	17.1	-7.4
PNV J00414889+4109148	2018/07/01	00^h 41^m 48.89^s	41° 09′ 14.8″	17.4	-7.1
PNV J00420765+4119438	2018/07/12	00^h 42^m 07.65^s	41° 19′ 43.8″	17.3	-7.2
PNV J00425261+4118409	2018/07/15	00^h 42^m 52.61^s	41° 18′ 40.9″	18.6	-5.9
PNV J00425074+4115461	2018/07/31	00^h 42^m 50.74^s	41° 15′ 46.1″	19.1	-5.4
PNV J00424214+4114457	2018/08/02	00^h 42^m 42.14^s	41° 14′ 45.7″	17.5	-7.0
PNV J00392190+4015488	2018/08/13	00^h 39^m 21.90^s	40° 15′ 48.8″	19.0	-5.5
PNV J00451587+4210269	2018/08/21	00^h 45^m 15.87^s	42° 10′ 26.9″	17.9	-6.6
PNV J00424990+4123348	2018/10/11	00^h 42^m 49.90^s	41° 23′ 34.8″	17.9	-6.6
PNV J00424012+4117273	2018/10/13	00^h 42^m 40.12^s	41° 17′ 27.3″	17.5	-7.0
TCP J00420310+4102331	2018/10/15	00^h 42^m 03.10^s	41° 02′ 33.1″	18.0	-6.5
PNV J00424065+4111080	2018/12/03	00^h 42^m 40.65^s	41° 11′ 08.0″	18.7	-5.8
PNV J00424241+4119411	2018/12/17	00^h 42^m 42.41^s	41° 19′ 41.1″	18.2	-6.3
PNV J00432462+4120222	2018/12/22	00^h 43^m 24.62^s	41° 20′ 22.2″	18.0	-6.5
PNV J00424380+4117208	2018/12/23	00^h 42^m 43.80^s	41° 17′ 20.8″	17.5	-7.0

In other galaxies

Any galaxy within 20 million light-years of the Sun could theoretically have nova events bright enough to be detected from Earth, although in practice most are only detected in galaxies within 10-15 million light-years of the Milky Way, such as the Triangulum Galaxy, Messier 81, Messier 82, Messier 83, and Messier 94.

In 2018, of the ten novae observed in other galaxies than the Milky Way or the Andromeda Galaxy, eight were in Messier 81, with the remaining two from the Triangulum Galaxy and Messier 83. A luminous red nova, probably caused by the merger of two stars, occurred in NGC 45.

Nova name	Discovery date	Host galaxy	Right ascension	Declination	Peak brightness (v)^[1]	Distance (million light-years)	Absolute magnitude (v)	Type
PNV J13370978-2956576	2018/01/28	Messier 83	13^h 37^m 09.78^s	−29° 56′ 57.6″	20.7	15.2	-7.6	Classical
PNV J09555926+6903517	2018/01/30	Messier 81	09^h 55^m 59.26^s	69° 03′ 51.7″	20.3	11.5	-7.4	Classical
PNV J09545236+6904085	2018/02/19	Messier 81	09^h 54^m 52.36^s	69° 04′ 08.5″	20.0	11.5	-7.7	Classical
PNV J09553607+6902141	2018/03/06	Messier 81	09^h 55^m 36.07^s	69° 02′ 14.1″	20.8	11.5	-6.9	Classical
PNV J09551340+6900478	2018/03/20	Messier 81	09^h 55^m 13.40^s	69° 00′ 47.8″	21.2	11.5	-6.5	Classical
PNV J09553194+6909147	2018/04/02	Messier 81	09^h 55^m 31.94^s	69° 09′ 14.7″	20.4	11.5	-7.3	Classical
PNV J09555269+6858409	2018/04/09	Messier 81	09^h 55^m 52.69^s	68° 58′ 40.9″	20.6	11.5	-7.1	Classical
AT 2018bwo	2018/05/22	NGC 45	00^h 14^m 01.72^s	−23° 11′ 35.8″	16.4	32.6	-13.6	Luminous Red Nova
PNV J09560988+6859108	2018/10/12	Messier 81	09^h 56^m 09.88^s	68° 59′ 10.8″	20.1	11.5	-7.6	Classical
PNV J01334673+3032181	2018/10/13	Triangulum Galaxy	01^h 33^m 46.73^s	30° 32′ 18.1″	18.1	2.65	-6.4	Classical
PNV J09555246+6902009	2018/11/06	Messier 81	09^h 55^m 52.46^s	69° 02′ 00.9″	20.0	11.5	-7.7	Classical

Notes

↑ In most cases, the spectral type is estimated based on the absolute magnitude

Related Research Articles

The Local Group is the galaxy group that includes the Milky Way, where Earth is located. It has a total diameter of roughly 3 megaparsecs (10 million light-years; 9×10¹⁹ kilometres), and a total mass of the order of 2×10¹² solar masses (4×10⁴² kg). It consists of two collections of galaxies in a "dumbbell" shape; the Milky Way and its satellites form one lobe, and the Andromeda Galaxy and its satellites constitute the other. The two collections are separated by about 800 kiloparsecs (3×10^⁶ ly; 2×10¹⁹ km) and are moving toward one another with a velocity of 123 km/s. The group itself is a part of the larger Virgo Supercluster, which may be a part of the Laniakea Supercluster. The exact number of galaxies in the Local Group is unknown as some are occluded by the Milky Way; however, at least 80 members are known, most of which are dwarf galaxies.

<span class="mw-page-title-main">Nova</span> Nuclear explosion in a white dwarf star

A nova is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star that slowly fades over weeks or months. All observed novae involve white dwarfs in close binary systems, but causes of the dramatic appearance of a nova vary, depending on the circumstances of the two progenitor stars. The main sub-classes of novae are classical novae, recurrent novae (RNe), and dwarf novae. They are all considered to be cataclysmic variable stars.

The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way. It was originally named the Andromeda Nebula and is cataloged as Messier 31, M31, and NGC 224. Andromeda has a D₂₅ isophotal diameter of about 46.56 kiloparsecs (152,000 light-years) and is approximately 765 kpc (2.5 million light-years) from Earth. The galaxy's name stems from the area of Earth's sky in which it appears, the constellation of Andromeda, which itself is named after the princess who was the wife of Perseus in Greek mythology.

The Triangulum Galaxy is a spiral galaxy 2.73 million light-years (ly) from Earth in the constellation Triangulum. It is catalogued as Messier 33 or NGC 598. With the D₂₅ isophotal diameter of 18.74 kiloparsecs (61,100 light-years), the Triangulum Galaxy is the third-largest member of the Local Group of galaxies, behind the Andromeda Galaxy and the Milky Way.

Indus is a constellation in the southern sky first professionally surveyed by Europeans in the 1590s and mapped on a globe by Petrus Plancius by early 1598. It was included on a plate illustrating southern constellations in Bayer's sky atlas Uranometria in 1603. It lies well south of the Tropic of Capricorn but its triangular shape can be seen for most of the year from the Equator. It is elongated from north to south and has a complex boundary. The English translation of its name is generally given as the Indian, though it is unclear which indigenous people the constellation was originally supposed to represent.

The Pinwheel Galaxy is a face-on, unbarred, and counterclockwise spiral galaxy located 21 million light-years from Earth in the constellation Ursa Major. It was discovered by Pierre Méchain in 1781 and was communicated that year to Charles Messier, who verified its position for inclusion in the Messier Catalogue as one of its final entries.

This is a list of lists, grouped by type of astronomical object.

NGC 300 (also known as Caldwell 70 or the Sculptor Pinwheel Galaxy) is a spiral galaxy in the constellation Sculptor. It was discovered on 5 August 1826 by Scottish astronomer James Dunlop. It is one of the closest galaxies to the Local Group, and it most likely lies between the latter and the Sculptor Group. It is the brightest of the five main spirals in the direction of the Sculptor Group. It is inclined at an angle of 42° when viewed from Earth and shares many characteristics of the Triangulum Galaxy. It is 94,000 light-years in diameter, somewhat smaller than the Milky Way, and has an estimated mass of (2.9 ± 0.2) × 10¹⁰M_☉.

<span class="mw-page-title-main">NGC 2403</span> Galaxy in the constellation Camelopardalis

NGC 2403 is an intermediate spiral galaxy in the constellation Camelopardalis. It is an outlying member of the M81 Group, and is approximately 8 million light-years distant. It bears a similarity to M33, being about 50,000 light years in diameter and containing numerous star-forming H II regions. The northern spiral arm connects it to the star forming region NGC 2404. NGC 2403 can be observed using 10×50 binoculars. NGC 2404 is 940 light-years in diameter, making it one of the largest known H II regions. This H II region represents striking similarity with NGC 604 in M33, both in size and location in galaxy.

A luminous red nova is a stellar explosion thought to be caused by the merging of two stars. They are characterised by a distinct red colour, and a light curve that fades slowly with resurgent brightness in the infrared. Luminous red novae are not related to standard novae, which are explosions that occur on the surface of white dwarf stars.

NGC 45 is a low surface brightness spiral galaxy in the equatorial constellation of Cetus. It was discovered on 11 November 1835 by the English astronomer John Herschel. The galaxy is located at a distance of 22 million light years and is receding with a heliocentric radial velocity of 466 km/s. It is located in the vicinity of the Sculptor Group, but is most likely a background galaxy.

V339 Delphini or Nova Delphini 2013 (PNV J20233073+2046041) is a bright nova star in the constellation Delphinus. It was discovered on 14 August 2013 by amateur astronomer Koichi Itagaki in Japan and confirmed by the Liverpool Telescope on La Palma. The nova appeared with a magnitude 6.8 when it was discovered and peaked at magnitude 4.3 on 16 August 2013. A nova is produced by the fusion of accumulated material on the white dwarf nova progenitor acquired from its companion star. The nova system is thus a binary star, and a classical nova. The white dwarf is a carbon-oxygen white dwarf, with an estimated mass of 1.04±0.02 M_☉. There is not yet a consensus about what the binary's orbital period is; estimates range from 3.15 hours to 6.43 hours.

NGC 6984 is a barred spiral galaxy located 180 million light years away in the constellation Indus. It is a Type II Seyfert galaxy, a type of Active galactic nucleus (AGN). It is situated south of the celestial equator, and is visible with the help of a telescope having an aperture of 10 inches or more. It was discovered on 8 July 1834 by British astronomer John Herschel.

V1369 Centauri, also known as Nova Centauri 2013, was a bright nova in the constellation Centaurus that occurred in 2013. It was discovered on December 2, 2013 by amateur astronomer John Seach in Australia with a magnitude of 5.5. On December 14, 2013 it peaked at about magnitude 3.3, making it the brightest nova so far of this millennium.

V357 Muscae was a bright nova in the constellation Musca. It was discovered on January 14, 2018 by Rob Kaufman of Bright, Victoria, Australia with a magnitude of 7.0.

V392 Persei, also known as Nova Persei 2018, is a bright nova in the constellation Perseus discovered on April 29, 2018. It was previously known as a dwarf nova.

YZ Reticuli, also known as Nova Reticuli 2020 was a naked eye nova in the constellation Reticulum discovered on July 15, 2020. Previously it was known as a VY Sculptoris type object with the designation MGAB-V207.

References

1 2 3 Mukai, Koji. "Recent Novae". asd.gsfc.nasa.gov. Retrieved 25 January 2019.
↑ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 .
↑ "CBET 4473: 20180117 : NOVA MUSCAE 2018". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.
↑ "CBET 4481: 20180130 : NOVA SCORPII 2018 = PNV J17180658-3204279". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.
↑ "CBET 4482: 20180130 : NOVA CIRCINI 2018 = PNV J13532700-6725110". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.
↑ "CBET 4488: 20180212 : NOVA SCORPII 2018 No. 2 = PNV J16484962-4457032". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.
↑ "CBET 4489: 20180225 : NOVA IN OPHIUCHUS = PNV J17244011-2421463". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.
↑ Stanek, K. Z. "ATel #11348: ASAS-SN Discovery of a Possible Galactic Nova ASASSN-18ds". ATel. Retrieved 25 January 2019.
↑ "CBET 4492: 20180312 : NEW NOVA IN OPHIUCHUS = TCP J17140253-2849233 = PNV J17140261-2849237". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.
↑ "CBET 4498: 20180322 : NOVA CARINAE 2018". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.
↑ "CBET 4499: 20180325 : NOVA CANIS MAJORIS 2018 = TCP J07134590-2112330". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.
↑ "CBET 4507: 20180412 : NOVA IN SAGITTARIUS = PNV J18040967-1803581". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.
↑ "V0392 Per". International Variable Star Index. AAVSO. Retrieved 17 January 2021.
↑ "CBET 4520: 20180605 : NOVA LUPI 2018 = PNV J15384000-4744500". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.
↑ "CBET 4530: 20180703 : NOVA SCUTI 2018 = TCP J18292290-1430460". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.
↑ "CBET 4540: 20180813 : NEW NOVA IN OPHIUCHUS = PNV J17422408-2053088". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.
↑ "CBET 4568: 20181026 : NOVA NORMAE 2018 = PNV J16143400-5330050". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

External links

List of all galactic novae

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.

[3] In most cases, the spectral type is estimated based on the absolute magnitude

[novaelist-1] 1 2 3 Mukai, Koji. "Recent Novae". asd.gsfc.nasa.gov. Retrieved 25 January 2019.

[gaiaDR2-2] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 .

[JanMuscae-4] "CBET 4473: 20180117 : NOVA MUSCAE 2018". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

[JanScorpii-5] "CBET 4481: 20180130 : NOVA SCORPII 2018 = PNV J17180658-3204279". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

[JanCircini-6] "CBET 4482: 20180130 : NOVA CIRCINI 2018 = PNV J13532700-6725110". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

[FebScorpii-7] "CBET 4488: 20180212 : NOVA SCORPII 2018 No. 2 = PNV J16484962-4457032". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

[FebOphiuchi-8] "CBET 4489: 20180225 : NOVA IN OPHIUCHUS = PNV J17244011-2421463". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

[ASASSN18ds-9] Stanek, K. Z. "ATel #11348: ASAS-SN Discovery of a Possible Galactic Nova ASASSN-18ds". ATel. Retrieved 25 January 2019.

[MarOphiuchi-10] "CBET 4492: 20180312 : NEW NOVA IN OPHIUCHUS = TCP J17140253-2849233 = PNV J17140261-2849237". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

[MarCarinae-11] "CBET 4498: 20180322 : NOVA CARINAE 2018". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

[MarCanisMajoris-12] "CBET 4499: 20180325 : NOVA CANIS MAJORIS 2018 = TCP J07134590-2112330". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

[AprSagittarii-13] "CBET 4507: 20180412 : NOVA IN SAGITTARIUS = PNV J18040967-1803581". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

[AprPersei-14] "V0392 Per". International Variable Star Index. AAVSO. Retrieved 17 January 2021.

[JunLupi-15] "CBET 4520: 20180605 : NOVA LUPI 2018 = PNV J15384000-4744500". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

[JulScuti-16] "CBET 4530: 20180703 : NOVA SCUTI 2018 = TCP J18292290-1430460". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

[AugOphiuchi-17] "CBET 4540: 20180813 : NEW NOVA IN OPHIUCHUS = PNV J17422408-2053088". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

[OctNormae-18] "CBET 4568: 20181026 : NOVA NORMAE 2018 = PNV J16143400-5330050". Central Bureau for Astronomical Telegrams. IAU. Retrieved 25 January 2019.

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v t e 2018 in space
« 2017 2019 »
Space probe launches	TESS (lunar flyby; Apr 2018) Queqiao (mission to the Moon; May 2018) InSight / Mars Cube One (mission to Mars; May 2018) Parker Solar Probe (solar space mission; Aug 2018) BepiColombo (mission to Mercury; Oct 2018) Chang'e 4 / Yutu-2 (mission to the Moon; Dec 2018)
Impact events	2018 LA Kamchatka meteor
Selected NEOs	Asteroid close approaches 2010 WC9 2017 VR12 2017 YE5 2017 YZ1 2018 AH 2018 BD 2018 BF3 2018 CB 2018 CC (276033) 2002 AJ129 (505657) 2014 SR339 2018 CF2 2018 CL 2018 CN2 2018 CY2 2018 DV1 2018 GE3 2018 PD20 2018 LF16 2018 WV1 (163899) 2003 SD220
Exoplanets	Gliese 1132 c possible exomoon Kepler-1625b I K2-141b K2-146b K2-148b K2-155d K2-229b K2-239b K2-239c K2-239d K2-288Bb Barnard's Star b (refuted in 2021) EPIC 211945201 b HD 89345 b KELT-21b NGTS-3Ab
Discoveries	LSPM J0207+3331 VVV-WIT-07 MACS J1149 Lensed Star 1 10 moons of Jupiter 541132 Leleākūhonua (announced) Hyperion proto-supercluster 2MASS J18082002−5104378 Farout ( 2018 VG18 ) FarFarOut ( 2018 AG37 first imaged) AT2018hyz SN 2018cow
Novae	V357 Muscae (Nova Muscae) V906 Carinae (Nova Carinae) V392 Persei (Nova Persei)
Comets	C/2017 T1 (Heinze) C/2017 U7 C/2018 C2 (Lemmon) 37P/Forbes 66P/du Toit 64P/Swift–Gehrels 38P/Stephan–Oterma C/2018 F4 (PanSTARRS) C/2018 V1 (Machholz-Fujikawa-Iwamoto) 46P/Wirtanen
Space exploration	Hayabusa2 (asteroid Ryugu arrival; Jun 2018) Kepler retirement (Oct 2018) InSight (Mars landing; Oct 2018) Dawn retirement (Nov 2018) OSIRIS-REx (asteroid Bennu arrival; Dec 2018) Voyager 2 (enters interstellar space; Dec 2018) New Horizons (encounter with 486958 Arrokoth; Dec 2018 / Jan 2019)
Outer spaceportal 2017 in outer space — 2018 in outer space — 2019 in outer space

List of novae in 2018

Contents

List of novae in 2018

In the Milky Way

In the Andromeda Galaxy

In other galaxies

See also

Notes

Related Research Articles

References

External links