1771 Makover

1771 MakoverDiscovery[1]

Discovered by| L. Chernykh
Discovery site| Crimean Astrophysical Obs.
Discovery date| 24 January 1968
Designations

MPC designation

| (1771) Makover
Named after| Samuel Makover (astronomer)[2]

Alternative designations

| 1968 BD * 1937 LM
1938 QJ * 1941 FH
1950 XW * 1952 FU
1958 HF * 1961 XV
1966 UC
Minor planet category| main-belt * (outer) [3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc| 78.58 yr (28,700 days)
|{{{apsis}}}|helion}}| 3.6697 AU
|{{{apsis}}}|helion}}| 2.5742 AU

Semi-major axis

| 3.1219 AU
Eccentricity| 0.1755
Orbital period| 5.52 yr (2,015 days)
Mean anomaly| 59.003°
Mean motion| 0° 10m 43.32s / day
Inclination| 11.249°
Longitude of ascending node| 86.335°

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

| 316.67°
Physical characteristics
Dimensions| 46.886±0.293 km[4]
51.202±0.294 km[5]
56.59 km (derived)[3]
63.59±19.06 km[6]
Rotation period| 11.26±0.01 h[7]
Geometric albedo| 0.025±0.019[6]
0.0382 (derived)[3]
0.0614±0.0097[5]
0.072±0.008[4]

Spectral type

| C[3][8]
Absolute magnitude (H)| 10.1[5] * 10.4[1][3] * 10.59[6] * 10.60±0.27[8]

1771 Makover, provisional designation 1968 BD, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 50 kilometers in diameter.

It was discovered on 24 January 1968, by Russian astronomer Lyudmila Chernykh at the Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula.[9] It was named after Russian astronomer Samuel Makover.[2]

## Contents

* 1 Orbit and classification
* 2 Physical characteristics
* 3 Naming
* 4 References
* 5 External links

## Orbit and classification

The dark C-type asteroid orbits the Sun in the outer main-belt at a distance of 2.6–3.7 AU once every 5 years and 6 months (2,015 days). Its orbit has an eccentricity of 0.18 and an inclination of 11° with respect to the ecliptic.[1] At Johannesburg Observatory, Makover was first identified as 1937 LM in 1937. Its first used observation was made at the same observatory one year later, when it was identified as 1938 QJ, extending the body's observation arc by 30 years prior to its official discovery observation.[9]

## Physical characteristics

In December 2011, a rotational lightcurve of Makover was obtained by astronomer Andrea Ferrero from photometric observation. It gave a well-defined rotation period of 11.26 hours with a brightness variation of 0.25 magnitude ({{{1}}}).[7]

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Makover measures between 46.89 and 63.59 kilometers in diameter, and its surface has an albedo between 0.025 and 0.072.[4][5][6] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0382 and a diameter of 56.59 kilometers with an absolute magnitude of 10.4.[3]

## Naming

This minor planet was named in honor of Russian astronomer Samuel Gdalevich Makover (1908–1970), who studied extensively the orbit of Encke's Comet (referred to as Comet Encke-Backlund in Russia), and pioneered in the use of electronic calculators for computing planetary perturbations and orbit improvements. He was head of the Institute of Theoretical Astrophysics's (ITA) department of minor planets and comets, and editor of the annual volume of Minor Planet Ephemerides. He was also a vice-president of IAU's commission 20, Positions & Motions of Minor Planets, Comets & Satellites, in the 1960s.[2] The official naming citation was published by the Minor Planet Center on 25 September 1971 (M.P.C. 3185).[10]

## References

1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 1771 Makover (1968 BD)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001771. Retrieved 1 July 2017.
2. ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1771) Makover". Dictionary of Minor Planet Names – (1771) Makover. Springer Berlin Heidelberg. p. 141. doi:10.1007/978-3-540-29925-7_1772. ISBN 978-3-540-00238-3.
3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (1771) Makover". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1771|Makover. Retrieved 20 December 2016.
4. ↑ 4.0 4.1 4.2 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 20 December 2016.
5. ↑ 5.0 5.1 5.2 5.3 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. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M.
6. ↑ 6.0 6.1 6.2 6.3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C. et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. doi:10.1088/2041-8205/759/1/L8. Bibcode: 2012ApJ...759L...8M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M. Retrieved 20 December 2016.
7. ↑ 7.0 7.1 Ferrero, Andrea (April 2012). "Lightcurve Determination at the Bigmuskie Observatory from 2011 July-December". The Minor Planet Bulletin 39 (2): 65–67. ISSN 1052-8091. Bibcode: 2012MPBu...39...65F. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012MPBu...39...65F. Retrieved 20 December 2016.
8. ↑ 8.0 8.1 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. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 20 December 2016.
9. ↑ 9.0 9.1 "1771 Makover (1968 BD)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1771. Retrieved 20 December 2016.
10. ↑ Schmadel, Lutz D.. "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.

## External links

* 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
* 1771 Makover at AstDyS-2, Asteroids—Dynamic Site
* Ephemeris * Observation prediction * Orbital info * Proper elements * Observational info
* 1771 Makover at the JPL Small-Body Database
* Close approach * Discovery * Ephemeris * Orbit diagram * Orbital elements * Physical parameters

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