7346 Boulanger

Last updated

7346 Boulanger
Discovery [1]
Discovered by E. W. Elst
Discovery site CERGA Obs.
Discovery date20 February 1993
Designations
(7346) Boulanger
Named after
Nicolas Boulanger
(French naturalist)
1993 DQ2 ·1981 UC16
1986 TK5 ·1986 TX10
1990 RN18
main-belt [1] [2]  ·(outer)
Koronis [3]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc 63.01 yr (23,016 d)
Aphelion 3.1060 AU
Perihelion 2.6453 AU
2.8757 AU
Eccentricity 0.0801
4.88 yr (1,781 d)
169.09°
0° 12m 7.56s / day
Inclination 3.1808°
119.00°
254.01°
Physical characteristics
Mean diameter
7.378±0.081  km [4]
0.270±0.066 [4]
S (SDSS-MOC) [5]
12.8 [1] [2]

    7346 Boulanger, provisional designation 1993 DQ2, is a Koronian asteroid from the outer regions of the asteroid belt, approximately 7.4 kilometers (4.6 miles) in diameter. It was discovered on 20 February 1993, by Belgian astronomer Eric Elst at the CERGA Observatory in Caussols, southeastern France. It was named after French Enlightenment philosopher Nicolas Boulanger. [1]

    Contents

    Orbit and classification

    Boulanger is a member of the Koronis family ( 605 ), [3] a very large outer asteroid family with nearly co-planar ecliptical orbits. [6] It orbits the Sun in the outer main-belt at a distance of 2.6–3.1  AU once every 4 years and 11 months (1,781 days; semi-major axis of 2.88 AU). Its orbit has an eccentricity of 0.08 and an inclination of 3° with respect to the ecliptic. [2]

    The body's observation arc begins with a precovery taken at Palomar Observatory in April 1955, nearly 38 years prior to its official discovery observation at Caussols. [1]

    Physical characteristics

    In the SDSS-based taxonomy, Boulanger is a common, stony S-type asteroid, [5] which agrees with the overall spectral type for Koronian asteroids. [6] :23 It has an absolute magnitude of 12.8. [1] [2] As of 2018, no rotational lightcurve of Boulanger has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown. [2]

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Boulanger measures 7.378 kilometers in diameter and its surface has an albedo of 0.270. [4]

    Naming

    This minor planet was named after Enlightenment philosopher and geologist Nicolas Antoine Boulanger (1722–1759). [1] The official naming citation was published by the Minor Planet Center on 24 June 2002 ( M.P.C. 46008). [7]

    Related Research Articles

    3568 ASCII, provisional designation 1936 UB, is a dark background asteroid from the outer regions of the asteroid belt, approximately 24 kilometers in diameter. It was discovered on 17 October 1936, by French astronomer Marguerite Laugier at the Nice Observatory in southwestern France. In 1988, the D-type asteroid was named after both the computer character code ASCII and the Japanese computer magazine with the same name.

    10979 Fristephenson, provisional designation 4171 T-2, is a carbonaceous Sulamitis asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered during the Palomar–Leiden Trojan survey on 29 September 1973, by Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at Palomar Observatory in California, United States. The dark C-type asteroid was named for British historian of astronomy Francis Richard Stephenson.

    34351 Decatur, provisional designation 2000 RZ8, is a Koronis asteroid from the outer region of the asteroid belt, approximately 3.5 kilometers (2.2 miles) in diameter. It was discovered on 3 September 2000, by American amateur astronomer Loren Ball at his Emerald Lane Observatory in Alabama, United States. The Q-type asteroid was named after the city of Decatur, location of the discovering observatory.

    10252 Heidigraf, provisional designation 4164 T-1, is a Koronian asteroid from the outer regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered during the Palomar–Leiden Trojan survey on 26 March 1971, by Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at Palomar Observatory in California, United States. The likely elongated S-type asteroid has a brightness variation of 0.56 magnitude. It was named after Heidi Graf, a former Head of the ESTEC Communications Office.

    <span class="mw-page-title-main">57424 Caelumnoctu</span>

    57424 Caelumnoctu, provisional designation 2001 SP22, is an Eoan asteroid from the outer regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 16 September 2001, by astronomers of the Lincoln Near-Earth Asteroid Research at Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico. The asteroid was named for the BBC television programme The Sky at Night.

    9916 Kibirev, provisional designation 1978 TR2, is a Koronian asteroid from the outer regions of the asteroid belt, approximately 6 kilometers (3.7 miles) in diameter. It was discovered on 3 October 1978, by astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. The likely S-type asteroid has a rotation period of about 15.2 hours and was named after Russian informatician Sergej Kibirev.

    3409 Abramov, provisional designation 1977 RE6, is a stony Koronian asteroid from the outer region of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 9 September 1977, by Soviet–Russian astronomer Nikolai Chernykh at Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula. The asteroid was named after Russian writer Fyodor Abramov.

    15092 Beegees, provisional designation 1999 EH5, is a stony Eoan asteroid from the outer regions of the asteroid belt, approximately 12 kilometers (7.5 miles) in diameter. It was discovered on 15 March 1999, by Australian amateur astronomer John Broughton at his Reedy Creek Observatory in Queensland, Australia. The S-type asteroid was named for the brothers of the Gibb family, known as the musical trio Bee Gees.

    1570 Brunonia, provisional designation 1948 TX, is a stony asteroid of the Koronis family from the outer regions of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 9 October 1948, by Belgian astronomer Sylvain Arend at the Royal Observatory of Belgium in Uccle. The S-type asteroid is likely elongated and has a longer-than-average rotation period of more than 48 hours. It was named for Brown University in Rhode Island, United States.

    2325 Chernykh, provisional designation 1979 SP, is a dark Themistian asteroid from the outer regions of the asteroid belt, approximately 23 kilometers in diameter. It was discovered on 25 September 1979, by Czech astronomer Antonín Mrkos at the Klet Observatory in the Czech Republic. The asteroid was named after Russian astronomer couple Lyudmila Chernykh and Nikolai Chernykh.

    <span class="mw-page-title-main">4429 Chinmoy</span>

    4429 Chinmoy, provisional designation 1978 RJ2, is a Nysian asteroid from the inner regions of the asteroid belt, approximately 3.5 kilometers (2.2 miles) in diameter. It was discovered on 12 September 1978, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean Peninsula. The likely S-type asteroid was named after Indian spiritual leader Sri Chinmoy.

    11132 Horne, provisional designation 1996 WU, is a Hygiean asteroid from the outer regions of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 17 November 1996, by American amateur astronomer Dennis di Cicco at his Sudbury Observatory in Massachusetts, United States. The asteroid was named for Johnny Horne, photo editor of The Fayetteville Observer.

    2726 Kotelnikov, provisional designation 1979 SE9, is a stony Koronian asteroid from the outer regions of the asteroid belt, approximately 10 kilometers (6.2 miles) in diameter. It was discovered on 22 September 1979, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij on the Crimean peninsula. The S-type asteroid has a rotation period of 4.91 hours and is a suspected binary system. The asteroid was named for Soviet scientist and pioneer in radar astronomy, Vladimir Kotelnikov.

    7687 Matthias, provisional designation 2099 P-L, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 24 September 1960, by Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at Palomar Observatory in California. The S-type asteroid was named for German amateur astronomer Matthias Busch.

    19383 Rolling Stones, provisional designation 1998 BZ32, is a bright Vestian asteroid from the inner regions of the asteroid belt, approximately 2.7 kilometers (1.7 miles) in diameter. The V-type asteroid was discovered on 29 January 1998, by astronomers with the OCA–DLR Asteroid Survey at Caussols in southern France and named for the rock band The Rolling Stones.

    4118 Sveta, or by provisional designation, 1982 TH3, is an Eoan asteroid from the outer regions of the asteroid belt, approximately 13 kilometers (8.1 miles) in diameter. It was discovered on 15 October 1982, by Russian astronomer Lyudmila Zhuravleva at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. The asteroid was named after Soviet cosmonaut Svetlana Savitskaya.

    2443 Tomeileen, provisional designation A906 BJ, is a stony Eoan asteroid from the outer regions of the asteroid belt, approximately 32 kilometers in diameter. It was discovered on 24 January 1906, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in Heidelberg, Germany. The S-type asteroid was named after the parents of British astronomer Brian G. Marsden. It has a rotation period of 3.97 hours.

    10241 Miličević, provisional designation 1999 AU6, is a carbonaceous Themistian asteroid from the outer regions of the asteroid belt, approximately 11 kilometers (6.8 miles) in diameter. It was discovered on 9 January 1999, by Croatian astronomer Korado Korlević at the Višnjan Observatory in Croatia. The C-type asteroid has a short rotation period of 3.87 hours and was named after hermit and amateur astronomer Don Nikola Miličević.

    10140 Villon, provisional designation 1993 SX4, is a Nysian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers (3 miles) in diameter. It was discovered on 19 September 1993, by Belgian astronomer Eric Elst at the CERGA Observatory at Caussols in France. It was named after 15th-century French poet François Villon.

    12564 Ikeller, provisional designation 1998 SO49, is a stony Koronian asteroid from the outer region of the asteroid belt, approximately 5 kilometers in diameter.

    References

    1. 1 2 3 4 5 6 7 "7346 Boulanger (1993 DQ2)". Minor Planet Center. Retrieved 27 May 2018.
    2. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 7346 Boulanger (1993 DQ2)" (2018-04-21 last obs.). Jet Propulsion Laboratory . Retrieved 27 May 2018.
    3. 1 2 "Asteroid 7346 Boulanger". Small Bodies Data Ferret. Retrieved 27 May 2018.
    4. 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.
    5. 1 2 Carvano, J. M.; Hasselmann, P. H.; Lazzaro, D.; Mothé-Diniz, T. (February 2010). "SDSS-based taxonomic classification and orbital distribution of main belt asteroids". Astronomy and Astrophysics. 510: 12. Bibcode:2010A&A...510A..43C. doi: 10.1051/0004-6361/200913322 . Retrieved 30 October 2019. (PDS data set)
    6. 1 2 Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv: 1502.01628 . Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN   9780816532131.
    7. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 May 2018.