1325 Inanda

Last updated

1325 Inanda
Discovery [1]
Discovered by C. Jackson
Discovery site Johannesburg Obs.
Discovery date14 July 1934
Designations
(1325) Inanda
Named after
 Inanda [2]
(South African township)
1934 NR ·1926 RP
1930 OD
main-belt  ·(middle)
background [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 82.80 yr (30,241 days)
Aphelion 3.1900 AU
Perihelion 1.8917 AU
2.5408 AU
Eccentricity 0.2555
4.05 yr (1,479 days)
165.02°
0° 14m 36.24s / day
Inclination 7.4205°
14.393°
336.80°
Physical characteristics
Dimensions9.97±2.30 km [4]
10.87±0.6 km [5]
10.890±0.110 km [6] [7]
12.34±0.61 km [8]
20.52±0.05 h [9] [lower-alpha 1]
24 h (poor) [10]
141.6±0.2 h (poor) [11]
0.20±0.13 [4]
0.303±0.034 [8]
0.374±0.041 [6]
0.3742±0.0407 [7]
0.3756±0.043 [5]
S [12] [13]
11.50 [5] [7] [8] [12]  ·11.66±0.28 [13]  ·12.2 [1]  ·12.37 [4]

    1325 Inanda, provisional designation 1934 NR, is a stony background asteroid from the central regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 14 July 1934, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. [14] The asteroid was named after the township of Inanda in South Africa. [2]

    Contents

    Orbit and classification

    Inanda is a non-family asteroid of the main belt's background population. [3] It orbits the Sun in the central main-belt at a distance of 1.9–3.2  AU once every 4 years and 1 month (1,479 days; semi-major axis of 2.54 AU). Its orbit has an eccentricity of 0.26 and an inclination of 7° with respect to the ecliptic. [1]

    The asteroid was first identified as 1926 RP at Johannesburg in September 1926. The body's observation arc begins with its official discovery observation in July 1934. [14]

    Physical characteristics

    Inanda has been characterized as a stony, common S-type asteroid by Pan-STARRS photometric survey. [12] [13]

    Rotation period

    In November 2007, a rotational lightcurve of Inanda was obtained from photometric observations by American astronomer Brian Warner at his Palmer Divide Observatory in Colorado. Lightcurve analysis gave an ambiguous rotation period of 20.52 hours with an alternative period solution of 35.83 hours and a brightness amplitude of 0.12 magnitude ( U=2 ). [9] [lower-alpha 1] The results supersede previous observations that gave a fragmentary lightcurve with a period of 24 and 141.6 hours respectively ( U=1/1 ). [10] [11]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Inanda measures between 9.97 and 12.34 kilometers in diameter and its surface has an albedo between 0.20 and 0.3756. [4] [5] [6] [7] [8]

    The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.3756 and a diameter of 10.87 kilometers based on an absolute magnitude of 11.5. [12]

    Occultation

    On 12 November 2007, an occultation suggested that Inanda could be a binary asteroid. [15] However, the asteroid's suspected binary nature has not been mentioned in other studies since then. [12] [16]

    Naming

    This minor planet was named after the South African, Zulu-speaking Township of Inanda, KwaZulu-Natal. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 121 ). [2]

    Notes

    1. 1 2 Lightcurve plot of 1325 Inanda, Palmer Divide Observatory, B. D. Warner (2007), with a period of 20.52±0.05 hours and a brightness amplitude of 0.12±0.01 magnitude. [lower-alpha 2] Summary figures for (1325) Inanda at Collaborative Asteroid Lightcurve Link (CALL)

    Related Research Articles

    3728 IRAS, provisional designation 1983 QF, is a stony asteroid from the middle region of the asteroid belt, approximately 20 kilometers in diameter. On 23 August 1983, it was discovered by and later named after IRAS, a spaceborne all-sky infrared survey satellite.

    2069 Hubble, provisional designation 1955 FT, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 40 kilometers in diameter. It was discovered on 29 March 1955, by the Indiana Asteroid Program at Goethe Link Observatory, United States, and named after American astronomer Edwin Hubble.

    1952 Hesburgh, provisional designation 1951 JC, is a rare-type carbonaceous asteroid from the outer regions of the asteroid belt, approximately 37 kilometers in diameter.

    Lagrangea, provisional designation 1923 OU, is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 30 kilometers in diameter. It was discovered on 12 September 1923, by Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula. The asteroid was named after Italian mathematician and astronomer Joseph-Louis Lagrange.

    <span class="mw-page-title-main">1010 Marlene</span> Main-belt asteroid

    1010 Marlene is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 47 kilometers in diameter. It was discovered on 12 November 1923, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after German actress and singer Marlene Dietrich.

    <span class="mw-page-title-main">1073 Gellivara</span> Asteroid

    1073 Gellivara, provisional designation 1923 OW, is a dark Themistian asteroid, approximately 27 kilometers in diameter, located in the outer regions of the asteroid belt. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 14 September 1923, and later named after the Swedish town of Gällivare.

    <span class="mw-page-title-main">1069 Planckia</span> Background asteroid

    1069 Planckia, provisional designation 1927 BC, is a background asteroid from the outer regions of the asteroid belt, approximately 39 kilometers in diameter. It was discovered on 28 January 1927, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in Germany. The asteroid was named after German physicist Max Planck.

    1043 Beate, provisional designation 1925 HB, is a stony asteroid from the outer region of the asteroid belt, approximately 32 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory on 22 April 1925. Any reference of its name to a person is unknown.

    1064 Aethusa, provisional designation 1926 PA, is a stony background asteroid from the central regions of the asteroid belt, approximately 19 kilometers in diameter. It was discovered on 2 August 1926, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after the plant Aethusa cynapium.

    1092 Lilium, provisional designation 1924 PN, is a dark, carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 44 kilometers in diameter. It was discovered on 12 January 1924, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The asteroid was named after the flower Lilium.

    1194 Aletta, provisional designation 1931 JG, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 55 kilometers in diameter. It was discovered on 13 May 1931, by South African astronomer Cyril Jackson at Johannesburg Observatory in South Africa. It was later named after the discoverer's wife Aletta Jackson.

    1815 Beethoven, provisional designation 1932 CE1, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 30 kilometers (19 miles) in diameter. It was discovered on 27 January 1932, by German astronomer Karl Reinmuth at the Heidelberg Observatory. The uncommon F-type asteroid seems to have a long rotation period of 54 hours (tentative). It was named after Ludwig van Beethoven.

    1267 Geertruida, provisional designation 1930 HD, is a carbonaceous background asteroid from the inner regions of the asteroid belt, approximately 20 kilometers in diameter. Discovered by astronomer Hendrik van Gent at Johannesburg Observatory in 1930, the asteroid was later named after Geertruid Pels, sister of Dutch astronomer Gerrit Pels.

    1384 Kniertje, provisional designation 1934 RX, is a dark Adeonian asteroid from the central regions of the asteroid belt, approximately 26 kilometers in diameter. It was discovered on 9 September 1934, by Dutch astronomer Hendrik van Gent at the Union Observatory in Johannesburg, South Africa. The asteroid was named after a character in the Dutch play Op Hoop van Zegen by Herman Heijermans.

    <span class="mw-page-title-main">1582 Martir</span> Carbonaceous background asteroid

    1582 Martir, provisional designation 1950 LY, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 37 kilometers in diameter. It was discovered on 15 June 1950, by Argentine astronomer Miguel Itzigsohn at the La Plata Astronomical Observatory in Argentina. The asteroid was named after the First Lady of Argentina, Eva Perón.

    <span class="mw-page-title-main">4547 Massachusetts</span> Dark background asteroid from the central regions of the asteroid belt

    4547 Massachusetts is a dark background asteroid from the central regions of the asteroid belt, approximately 24 kilometers in diameter. It was discovered on 16 May 1990, by Japanese astronomers Kin Endate and Kazuro Watanabe at the JCPM Sapporo Station on the island of Hokkaido, Japan. The asteroid was named for the U.S. state of Massachusetts.

    1238 Predappia, provisional designation 1932 CA, is a dark Adeonian asteroid from the central regions of the asteroid belt, approximately 21 kilometers in diameter. It was discovered on 4 February 1932, by astronomer Luigi Volta at the Observatory of Turin in Pino Torinese, Italy. It was later named after the Italian village of Predappio.

    <span class="mw-page-title-main">1436 Salonta</span> Main-belt asteroid

    1436 Salonta, provisional designation 1936 YA, is a dark background asteroid from the outer regions of the asteroid belt, approximately 60 kilometers in diameter. Discovered by György Kulin at the Konkoly Observatory in 1936, the asteroid was later named for the Romanian city of Salonta, the birthplace of the discoverer.

    1266 Tone is a dark background asteroid from the outer regions of the asteroid belt, approximately 80 kilometers in diameter. Discovered by astronomer Okuro Oikawa at the Tokyo Observatory in 1927, it was assigned the provisional designation 1927 BD. The asteroid was later named after the Tone River, one of Japan's largest rivers.

    <span class="mw-page-title-main">2120 Tyumenia</span> Dark background asteroid

    2120 Tyumenia is a dark background asteroid, approximately 45 kilometers in diameter, located in the outer regions of the asteroid belt. It was discovered on 9 September 1967, by Soviet astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. The asteroid was named for the now Russian district of Tyumen Oblast in Western Siberia.

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1325 Inanda (1934 NR)" (2017-04-30 last obs.). Jet Propulsion Laboratory . Retrieved 5 December 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1325) Inanda". Dictionary of Minor Planet Names – (1325) Inanda. Springer Berlin Heidelberg. p. 108. doi:10.1007/978-3-540-29925-7_1326. ISBN   978-3-540-00238-3.
    3. 1 2 "Asteroid 1325 Inanda – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 29 October 2019.
    4. 1 2 3 4 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv: 1606.08923 . Bibcode:2016AJ....152...63N. doi: 10.3847/0004-6256/152/3/63 .
    5. 1 2 3 4 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T . Retrieved 22 October 2019.
    6. 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv: 1109.4096 . Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. S2CID   118745497 . Retrieved 5 December 2017.
    7. 1 2 3 4 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv: 1109.6407 . Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. S2CID   35447010.
    8. 1 2 3 4 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
    9. 1 2 Warner, Brian D. (June 2008). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: September-December 2007". The Minor Planet Bulletin. 35 (2): 67–71. Bibcode:2008MPBu...35...67W. ISSN   1052-8091 . Retrieved 5 December 2017.
    10. 1 2 Warner, B. (March 2000). "Asteroid Photometry at the Palmer Divide Observatory". The Minor Planet Bulletin. 27: 4–6. Bibcode:2000MPBu...27....4W . Retrieved 5 December 2017.
    11. 1 2 Menke, John; Cooney, Walt; Gross, John; Terrell, Dirk; Higgins, David (October 2008). "Asteroid Lightcurve Analysis at Menke Observatory". The Minor Planet Bulletin. 35 (4): 155–160. Bibcode:2008MPBu...35..155M. ISSN   1052-8091 . Retrieved 5 December 2017.
    12. 1 2 3 4 5 "LCDB Data for (1325) Inanda". Asteroid Lightcurve Database (LCDB). Retrieved 5 December 2017.
    13. 1 2 3 Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv: 1506.00762 . Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. S2CID   53493339 . Retrieved 5 December 2017.
    14. 1 2 "1325 Inanda (1934 NR)". Minor Planet Center. Retrieved 5 December 2017.
    15. ↑ Brad Timerson (19 February 2008). "2007 Asteroid Occultation Results for North America". www.asteroidoccultation.com. Archived from the original on 10 December 2017. Retrieved 5 December 2017.
    16. ↑ Robert Johnston (18 February 2017). "Asteroids with Satellites". Johnston's Archive. Retrieved 5 December 2017.
    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.