2121 Sevastopol

2121 SevastopolDiscovery [1]

Discovered by| T. Smirnova
Discovery site| Crimean Astrophysical Obs.
Discovery date| 27 June 1971
Designations

MPC designation

| (2121) Sevastopol
Pronunciation| /səˈvæstəpoʊl/[4]
Named after| Sevastopol city[2]

Alternative designations

| 1971 ME * 1932 HM
1936 WD * 1938 DY
1939 TO * 1952 SZ
1968 QJ1 * 1977 ED2
1978 WG
Minor planet category| main-belt * Flora [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc| 79.82 yr (29,154 days)
|{{{apsis}}}|helion}}| 2.5731 AU
|{{{apsis}}}|helion}}| 1.7945 AU

Semi-major axis

| 2.1838 AU
Eccentricity| 0.1783
Orbital period| 3.23 yr (1,179 days)
Mean anomaly| 94.889°
Mean motion| 0° 18m 19.44s / day
Inclination| 4.3780°
Longitude of ascending node| 145.72°

|{{{apsis}}}|helion}}

| 160.38°
Known satellites| 1[3][5]
Physical characteristics
Dimensions| 8.736±0.037 km[6]
12.48 km (calculated)[3]
Rotation period| 2.90640 h[3]
Geometric albedo| 0.24 (assumed)[3]
0.308±0.023[6]

Spectral type

| S [3]
Absolute magnitude (H)| 12.2

S/2010 (2121) 1Discovery

Discovered by| D. Higgins, P. Pravec, P. Kusnirak, J. Pollock, J. Oey, M. Husarik, G. Cervak, D. E. Reichart, K. M. Ivarsen, J. B. Haislip, and A. LaCluyze
Discovery date| 2010/07/23

Detection method

| Light curve
Orbital characteristics

Semi-major axis

| 26 km
Orbital period| 1.546 d
13 hours, 6 minutes
Angular distance| 46 mas (maximum)
Satellite of| 2121 Sevastopol
Physical characteristics
Dimensions| 3.54 ± 0.17 km
Volume| 20.0-26.7 km3 (assumed)
Apparent magnitude| 1.9 ± 0.1 fainter than primary
Absolute magnitude (H)| ~16.1

2121 Sevastopol, provisional designation 1971 ME, is a stony Florian asteroid and synchronous binary system from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 27 June 1971, by Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula.[7] Its minor-planet moon was discovered in 2010.

## Contents

* 1 Orbit and characterization
* 1.1 Satellite
* 2 Naming
* 3 References
* 4 External links

## Orbit and characterization

Sevastopol is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 1.8–2.6 AU once every 3 years and 3 months (1,179 days). Its orbit has an eccentricity of 0.18 and an inclination of 4° with respect to the ecliptic.[1]

### Satellite

In 2010, a minor-planet moon, designated S/2010 (2121) 1, was discovered around Sevastopol, orbiting at a distance of 26 kilometers with a diameter of 3.54 ± 0.17 km.[5]

## Naming

The asteroid was named after the Crimean city on the 200th anniversary of its foundation.[2] The approved naming citation was published by the Minor Planet Center on 28 January 1983 (M.P.C. 7616).[8]

## References

1. ↑ 1.0 1.1 1.2 "JPL Small-Body Database Browser: 2121 Sevastopol (1971 ME)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002121. Retrieved 19 June 2017.
2. ↑ 2.0 2.1 Schmadel, Lutz D. (2007). "(2121) Sevastopol". Dictionary of Minor Planet Names – (2121) Sevastopol. Springer Berlin Heidelberg. p. 172. doi:10.1007/978-3-540-29925-7_2122. ISBN 978-3-540-00238-3.
3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (2121) Sevastopol". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=2121|Sevastopol. Retrieved 19 June 2017.
4. ↑ "Sevastopol". Merriam-Webster Dictionary. https://www.merriam-webster.com/dictionary/Sevastopol.
5. ↑ 5.0 5.1 Johnston, Robert. "(2121) Sevastopol". http://www.johnstonsarchive.net/astro/astmoons/am-02121.html.
6. ↑ 6.0 6.1 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R. et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal 791 (2): 11. doi:10.1088/0004-637X/791/2/121. Bibcode: 2014ApJ...791..121M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M. Retrieved 19 June 2017.
7. ↑ "2121 Sevastopol (1971 ME)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2121. Retrieved 19 June 2017.
8. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. Retrieved 19 June 2017.

## External links

* Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
* Asteroid Lightcurve Database (LCDB), query form (info )
* Dictionary of Minor Planet Names, Google books
* Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
* Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
* 2121 Sevastopol at AstDyS-2, Asteroids—Dynamic Site
* Ephemeris * Observation prediction * Orbital info * Proper elements * Observational info
* 2121 Sevastopol at the JPL Small-Body Database
* Close approach * Discovery * Ephemeris * Orbit diagram * Orbital elements * Physical parameters

* v
* t
* e

Small Solar System bodies

Minor planets|

* Designation
* Groups
* List
* Moon
* Meanings of names

Asteroid|

* Aten asteroid
* Asteroid belt
* Family
* Jupiter trojan
* Near-Earth
* Spectral types

Distant minor planet|

* Centaur
* Damocloid
* Neptune trojan
* Trans-Neptunian object
* Detached
* Kuiper belt
* Oort cloud
* Scattered disc

Comets|

* Extinct
* Great
* Halley-type
* Hyperbolic
* Long-period
* Lost
* Main-belt
* Near-parabolic
* Periodic
* Sungrazing

Other|

* Meteoroids

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/2121 Sevastopol. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:2121_Sevastopol&oldid=180134"
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template