1907 Rudneva

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1907 Rudneva
Discovery [1]
Discovered by N. Chernykh
Discovery site Crimean Astrophysical Obs.
Discovery date11 September 1972
Designations
(1907) Rudneva
Named after
 Yevgeniya Rudneva [2]
(Soviet geodesist and war hero)
1972 RC2 ·1935 QX
1938 EY ·1938 FK
1942 EH ·1942 EM1
1950 EP ·1950 FB
1950 HL ·1958 DD
1958 FN ·1970 CP
main-belt  ·(middle)
background [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 79.66 yr (29,094 days)
Aphelion 2.6541 AU
Perihelion 2.4386 AU
2.5464 AU
Eccentricity 0.0423
4.06 yr (1,484 days)
181.05°
0° 14m 33.36s / day
Inclination 3.2198°
152.07°
59.096°
Physical characteristics
Dimensions10.977±0.108 km [4]
10.98±0.43 km [5]
11.32±2.95 km [6]
11.83 km (calculated) [7]
11.848±0.140 km [8]
44±3 h (poor) [9]
0.18±0.13 [6]
0.20 (assumed) [7]
0.2009±0.0531 [8]
0.232±0.025 [5]
S (assumed) [7]
12.00 [5] [7] [8]  ·12.1 [1]  ·12.29 [6]  ·12.45±0.27 [10]

    1907 Rudneva, provisional designation 1972 RC2, is a stony background asteroid from the central regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 11 September 1972, by astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory, Nauchnyj, on the Crimean peninsula. [11] The asteroid was named after Soviet geodesist and war hero Yevgeniya Rudneva. [2]

    Contents

    Orbit and classification

    Rudneva is a non-family asteroid from the main belt's background population. It orbits the Sun in the central asteroid belt at a distance of 2.4–2.7  AU once every 4 years and 1 month (1,484 days; semi-major axis of 2.55 AU). Its orbit has an eccentricity of 0.04 and an inclination of 3° with respect to the ecliptic. [1]

    The asteroid was first identified as 1935 QX at Johannesburg Observatory in August 1935. The body's observation arc begins with its identification as 1938 EY at Heidelberg Observatory in March 1938, almost 34 years prior to its official discovery observation at Nauchnyj. [11]

    Physical characteristics

    Rudneva is an assumed stony S-type asteroid. [7]

    Rotation period

    In April 2003, a fragmentary rotational lightcurve of Rudneva was obtained from photometric observations by French amateur astronomer René Roy. Lightcurve analysis gave a rotation period of 44 hours with a brightness amplitude of at least 0.1 magnitude ( U=1+ ). [9] As of 2017, no secure period of Rudneva has been obtained. [7]

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Rudneva measures between 10.977 and 11.848 kilometers in diameter and its surface has an albedo between 0.18 and 0.232. [4] [5] [6] [8]

    The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 11.83 kilometers based on an absolute magnitude of 12.0. [7]

    Naming

    This minor planet was named after Ukrainian-born Yevgeniya Rudneva (1920–1944) a member of the Astronomical–Geodetical Society of the U.S.S.R., head of the solar department, and Hero of the Soviet Union. She voluntarily joined the army as a navigator in the all-female Night Bombers Aviation Regiment, known as the Night Witches . She died in April 1944, while flying her 645th combat mission. [2] The official naming citation was published by the Minor Planet Center on 20 February 1976 ( M.P.C. 3937). [12]

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    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1907 Rudneva (1972 RC2)" (2017-11-02 last obs.). Jet Propulsion Laboratory . Retrieved 15 November 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1907) Rudneva". Dictionary of Minor Planet Names – (1907) Rudneva. Springer Berlin Heidelberg. p. 153. doi:10.1007/978-3-540-29925-7_1908. ISBN   978-3-540-00238-3.
    3. ↑ "Asteroid 1907 Rudneva". Small Bodies Data Ferret. Retrieved 21 October 2019.
    4. 1 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. arXiv: 1406.6645 . Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. S2CID   119293330 . Retrieved 15 November 2017.
    5. 1 2 3 4 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. arXiv: 1209.5794 . Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. S2CID   46350317 . Retrieved 15 November 2017.
    6. 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 .
    7. 1 2 3 4 5 6 7 "LCDB Data for (1907) Rudneva". Asteroid Lightcurve Database (LCDB). Retrieved 15 November 2017.
    8. 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.
    9. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1907) Rudneva". Geneva Observatory. Retrieved 15 November 2017.
    10. ↑ 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 15 November 2017.
    11. 1 2 "1907 Rudneva (1972 RC2)". Minor Planet Center. Retrieved 15 November 2017.
    12. ↑ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) . Springer Berlin Heidelberg. p.  221. Bibcode:2009dmpn.book.....S. doi:10.1007/978-3-642-01965-4. ISBN   978-3-642-01964-7.
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