1516 Henry

1516 Henry
Discovery [1]
Discovered by A. Patry
Discovery site Nice Observatory
Discovery date 28 January 1938
Designations
MPC designation 1516 Henry
Named after
 Paul and Prosper Henry
(astronomers, opticians)[2]
1938 BG · 1938 DM
main-belt · (middle) [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 77.60 yr (28345 days)
Aphelion 3.1086 AU (465.04 Gm)
Perihelion 2.1374 AU (319.75 Gm)
2.6230 AU (392.40 Gm)
Eccentricity 0.18513
4.25 yr (1551.7 d)
124.18°
0° 13m 55.236s / day
Inclination 8.7440°
125.85°
94.390°
Earth MOID 1.15074 AU (172.148 Gm)
Jupiter MOID 1.93478 AU (289.439 Gm)
Jupiter Tisserand parameter 3.363
Physical characteristics
Dimensions 19.92 km[4]
28.55±0.36 km[5]
26.442±0.150 km[6]
20.01 km (derived)[3]
Mean radius
 9.96±0.85 km
17.370 h (0.7238 d)[1][7]
10 h[8]
0.0536[4]
0.042±0.001[5]
0.0392±0.0045[6]
0.0767 (derived)[3]
0.0536±0.011[1]
S [3]
11.9

    1516 Henry, provisional designation 1938 BG, is a stony asteroid from the middle region of the asteroid belt, about 20 kilometers in diameter. It was discovered on 28 January 1938, by French astronomer André Patry at Nice Observatory in southeastern France.[9]

    The S-type asteroid orbits the Sun at a distance of 2.1–3.1 AU once every 4 years and 3 months (1,551 days). Its orbit shows an eccentricity of 0.18 and is tilted by 9 degrees to the plane of the ecliptic. It has a rotation period of 17.37 hours[7] and an albedo of 0.04–0.05, based on the surveys carried out by the Infrared Astronomical Satellite, IRAS, the Japanese Akari satellite, and the Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission.[4][5][6]

    The minor planet is named after the two brothers Paul Henry and Prosper Henry (1848–1905 and 1849–1903, respectively), who each discovered seven asteroids. As opticians, they constructed the 76-cm refractor telescope at Nice Observatory, among others. While mapping the ecliptic during their Carte du Ciel survey, they made all their fourteen, low-numbered asteroid discoveries, starting with 125 Liberatrix. They are also honoured by the lunar crater Henry Frères. The Martian crater Henry was named in honour of Paul.[2]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1516 Henry (1938 BG)" (2015-09-06 last obs.). Jet Propulsion Laboratory. Retrieved 27 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1516) Henry. Springer Berlin Heidelberg. p. 120. ISBN 978-3-540-29925-7. Retrieved December 2015.
    3. 1 2 3 4 "LCDB Data for (1516) Henry". Asteroid Lightcurve Database (LCDB). Retrieved December 2015.
    4. 1 2 3 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved December 2015.
    5. 1 2 3 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. Retrieved December 2015.
    6. 1 2 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. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved December 2015.
    7. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1516) Henry". Geneva Observatory. Retrieved December 2015.
    8. ↑ Polishook, D.; Ofek, E. O.; Waszczak, A.; Kulkarni, S. R.; Gal-Yam, A.; Aharonson, O.; et al. (April 2012). "Asteroid rotation periods from the Palomar Transient Factory survey". Monthly Notices of the Royal Astronomical Society 421 (3): 2094–2108. arXiv:1201.1930. Bibcode:2012MNRAS.421.2094P. doi:10.1111/j.1365-2966.2012.20462.x. Retrieved December 2015.
    9. ↑ "1516 Henry (1938 BG)". Minor Planet Center. Retrieved December 2015.

    External links


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