978 Aidamina

Last updated
978 Aidamina
Discovery  [1]
Discovered by S. Belyavskyj
Discovery site Simeiz Obs.
Discovery date18 May 1922
Designations
(978) Aidamina
Named after
Aida Minaevna
(discoverer's friend) [2]
1922 LY ·1929 YA
1946 QD ·1966 BD
A906 VB ·A923 YA
main-belt  ·(outer)  [3]
background
Orbital characteristics   [1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 110.15 yr (40,232 days)
Aphelion 3.9462 AU
Perihelion 2.4492 AU
3.1977 AU
Eccentricity 0.2341
5.72 yr (2,089 days)
119.30°
0° 10m 20.64s / day
Inclination 21.645°
216.64°
132.94°
Physical characteristics
Dimensions78.73±2.3 km (IRAS:17) [4]
78.78±29.26 km [5]
79.54±22.88 km [6]
82.28±2.71 km [7]
92.105±0.764 km [8]
9.5 h [9]
10.098±0.001 h [10]
10.099±0.004 h [11]
10.100±0.003 h [12]
0.027±0.004 [8]
0.035±0.002 [7]
0.0365±0.002(IRAS:17) [4]
0.04±0.02 [5]
0.04±0.03 [6]
B–V = 0.677 [1]
U–B = 0.252 [1]
Tholen = PF   [1]  ·PF  [3]
9.08±0.64 [13]  ·9.56 [6]  ·9.73 [1] [3] [4] [5] [7] [8]

    978 Aidamina, provisional designation 1922 LY, is a dark background asteroid from the outer region of the asteroid belt, approximately 79 kilometers (49 miles) in diameter. It was discovered by astronomer Sergey Belyavsky in 1922, and later named after Aida Minaevna, a friend of the discoverer's family. [2]

    Contents

    Discovery

    Aidamina was discovered on 18 May 1922, by Soviet–Russian astronomer Sergey Belyavsky at Simeiz Observatory on the Crimean peninsula, [14] Twelve nights later, the body was independently discovered by Max Wolf at Heidelberg in Germany. [2]

    In 1906, it was first observed as A906 VB at Heidelberg. Aidamina's observation arc begins at Vienna, one month after its official discovery. The Minor Planet Center's observational records do not include the body's discovery observation at Simeiz from May 1922. [14]

    Orbit and classification

    Aidamina is a non-family asteroid from the main belt's background population. It orbits the Sun in the outer asteroid belt at a distance of 2.4–3.9  AU once every 5 years and 9 months (2,089 days). Its orbit has an eccentricity of 0.23 and an inclination of 22° with respect to the ecliptic. [1]

    Naming

    This minor planet was named after a friend of the discoverer's family, Aida Minaevna. [2] The author of the Dictionary of Minor Planet Names, Lutz Schmadel, compiled this citation asking several Russian astronomers including Nikolai Chernykh for further information. [2]

    Physical characteristics

    In the Tholen taxonomy, Aidamina is the only asteroid classified as PF-type asteroid, [15] a transitional class between the carbonaceous F-type and dark P-type asteroids, of which only a few dozens bodies are currently known. [16]

    Rotation period

    In 2003, three mostly fragmentary lightcurves of Aidamina were obtained by astronomers Maurice Clark at Montgomery College (9.5 hours; Δ0.1 mag; U=1 ), [9] French amateur astronomers Laurent Bernasconi and Jean-Gabriel Bosch (10.100 hours; Δ0.1 mag; U=1 ), [12] and a group of astronomers including Elaine Kirkpatrick at Rose-Hulman Observatory in Indiana, United States (10.099 hours; Δ0.13 mag; U=2 ). [11]

    In July 2014, a rather asymmetric bimodal lightcurve, obtained by a collaboration between American astronomers Frederick Pilcher and Andrea Ferrero, gave a more refine rotation period of 10.098 hours with a brightness variation of 0.24 magnitude.( U=3 ). [10]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Aidamina measures between 78.73 and 82.28 kilometers in diameter, and its surface has a low albedo between 0.035 and 0.04 (without preliminary results). [4] [5] [6] [7]

    The Collaborative Asteroid Lightcurve Link adopts the results obtained from 17 observations made by IRAS, that is, an albedo of 0.0365 and a diameter of 78.73 kilometers with an absolute magnitude of 9.73. [3]

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    References

    1. 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: 978 Aidamina (1922 LY)" (2017-01-10 last obs.). Jet Propulsion Laboratory . Retrieved 14 February 2017.
    2. 1 2 3 4 5 Schmadel, Lutz D. (2007). "(978) Aidamina". Dictionary of Minor Planet Names – (978) Aidamina. Springer Berlin Heidelberg. p. 85. doi:10.1007/978-3-540-29925-7_979. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 "LCDB Data for (978) Aidamina". Asteroid Lightcurve Database (LCDB). Retrieved 14 February 2017.
    4. 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.
    5. 1 2 3 4 Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv: 1509.02522 . Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. S2CID   9341381 . Retrieved 14 February 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 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)
    8. 1 2 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. arXiv: 1209.5794 . Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. S2CID   46350317 . Retrieved 14 February 2017.
    9. 1 2 Clark, Maurice (September 2006). "Lightcurve results for 383 Janina, 899 Jokaste, 1825 Klare, 2525 O'Steen 5064 Tanchozuru, and (17939) 1999 HH8". The Minor Planet Bulletin. 33 (3): 53–56. Bibcode:2006MPBu...33...53C. ISSN   1052-8091 . Retrieved 14 February 2017.
    10. 1 2 Pilcher, Frederick; Ferrero, Andrea (January 2015). "Rotation Period Determination for 978 Aidamina". The Minor Planet Bulletin. 42 (1): 28. Bibcode:2015MPBu...42...28P. ISSN   1052-8091 . Retrieved 14 February 2017.
    11. 1 2 Lecrone, Crystal; Duncan, Allison; Kirkpatrick, Elaine (December 2004). "Lightcurves and periods for asteroids 105 Artemis, 978 Aidamina, and 1103 Sequoia". The Minor Planet Bulletin. 31 (4): 77–78. Bibcode:2004MPBu...31...77L. ISSN   1052-8091 . Retrieved 14 February 2017.
    12. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (978) Aidamina". Geneva Observatory . Retrieved 14 February 2017.
    13. ↑ 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 14 February 2017.
    14. 1 2 "978 Aidamina (1922 LY)". Minor Planet Center. Retrieved 14 February 2017.
    15. ↑ "JPL Small-Body Database Search Engine: spec. type = PF (Tholen)". JPL Solar System Dynamics. Retrieved 3 January 2016.
    16. ↑ "JPL Small-Body Database Search Engine: spec. type = P (Tholen)". JPL Solar System Dynamics. Retrieved 3 January 2016.

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