1607 Mavis

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1607 Mavis
1607Mavis (Lightcurve Inversion).png
Lightcurve-based 3D-model of Mavis
Discovery [1]
Discovered by E. Johnson
Discovery site Johannesburg Obs.
Discovery date3 September 1950
Designations
(1607) Mavis
Named after
Mavis Bruwer
(wife of astronomer)
Jacobus Bruwer [2]
1950 RA ·1934 VQ
1958 OB ·1958 PD
A903 BH
main-belt  ·(middle) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 114.29 yr (41,743 days)
Aphelion 3.3268 AU
Perihelion 1.7728 AU
2.5498 AU
Eccentricity 0.3047
4.07 yr (1,487 days)
158.86°
0° 14m 31.56s / day
Inclination 8.5789°
122.53°
235.96°
Physical characteristics
Dimensions11.57±1.76 km [4]
12.10 km (derived) [3]
12.756±0.210 km [5] [6]
14.91±0.25 km [7]
6.1339±0.0004 h [8]
6.1508±0.0005 h [9]
0.189±0.007 [7]
0.193±0.021 [6]
0.2487±0.0428 [5]
0.31±0.11 [4]
0.3320 (derived) [3]
S [3] [10]
11.29±0.27 [10]  ·11.4 [1] [3]  ·11.54 [4]  ·11.6 [7] [5]

    1607 Mavis, provisional designation 1950 RA, is a stony asteroid from the central region of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 3 September 1950, by South African astronomer Ernest Johnson at Johannesburg Observatory in South Africa. [11] It was later named after the wife of astronomer Jacobus Bruwer. [2]

    Contents

    Orbit and classification

    This asteroid orbits the Sun in the middle main-belt at a distance of 1.8–3.3  AU once every 4 years and 1 month (1,487 days). Its orbit has an eccentricity of 0.30 and an inclination of 9° with respect to the ecliptic. [1] The asteroid's observation arc begins with its official discovery observations, as the two previous identifications, A903 BH and 1934 VQ, made at Heidelberg and Simeiz in 1903 and 1934, respectively, remained unused. [11]

    Physical characteristics

    Mavis is a stony S-type asteroid. [3] [10]

    Rotation period

    In September 2007, Australian astronomers Collin Bembrick and Julian Oey independently obtained two rotational lightcurves of Mavis. These well-defined lightcurves gave a rotation period of 6.1339 and 6.1508 hours with a brightness variation of 0.50 and 0.53 magnitude, respectively ( U=3/3 ). [8] [9]

    Diameter and albedo

    According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Mavis measures between 11.57 and 14.91 kilometers in diameter and its surface has an albedo between 0.189 and 0.31. [4] [5] [6] [7] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.3320 and a diameter of 12.10 kilometers based on an absolute magnitude of 11.4. [3]

    Naming

    This minor planet was named in honor of the Mavis Bruwer, wife of astronomer Jacobus Albertus Bruwer, who was an astronomer at Johannesburg Observatory, and after whom 1811 Bruwer was named. [2] The official naming citation was published by the Minor Planet Center on 20 February 1976 ( M.P.C. 3931). [12]

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    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1607 Mavis (1950 RA)" (2017-05-06 last obs.). Jet Propulsion Laboratory . Retrieved 5 June 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1607) Mavis". Dictionary of Minor Planet Names – (1607) Mavis. Springer Berlin Heidelberg. p. 127. doi:10.1007/978-3-540-29925-7_1608. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 7 "LCDB Data for (1607) Mavis". Asteroid Lightcurve Database (LCDB). Retrieved 29 December 2016.
    4. 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 .
    5. 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.
    6. 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. S2CID   118745497 . Retrieved 29 December 2016.
    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 Bembrick, Collin; Allen, Bill; Bolt, Greg (June 2008). "The Rotation Periods of 845 Naema, 1607 Mavis, and (30105) 2000 FO3". The Minor Planet Bulletin. 35 (2): 74–75. Bibcode:2008MPBu...35...74B. ISSN   1052-8091 . Retrieved 29 December 2016.
    9. 1 2 Oey, Julian (September 2008). "Lightcurve Analysis of Asteroids from the Kingsgrove and Leura Observatories in the 2nd Half of 2007". The Minor Planet Bulletin. 35 (3): 132–135. Bibcode:2008MPBu...35..132O. ISSN   1052-8091 . Retrieved 29 December 2016.
    10. 1 2 3 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 29 December 2016.
    11. 1 2 "1607 Mavis (1950 RA)". Minor Planet Center. Retrieved 29 December 2016.
    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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