892 Seeligeria

892 Seeligeria is dark Alauda asteroid from the outer region of the asteroid belt that was discovered by German astronomer Max Wolf on May 31, 1918 in Heidelberg and assigned a preliminary designation of 1918 DR. It was named after German astronomer Hugo Hans von Seeliger.

892 Seeligeria

Discovery
Discovered by	M. F. Wolf
Discovery site	Heidelberg Obs.
Discovery date	31 May 1918
Designations
MPC designation	(892) Seeligeria
Alternative designations	1918 DR
Minor planet category	main-belt · (outer) Alauda [1]
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	97.87 yr (35747 days)
Aphelion	3.5632 AU (533.05 Gm)
Perihelion	2.8970 AU (433.39 Gm)
Semi-major axis	3.2301 AU (483.22 Gm)
Eccentricity	0.10312
Orbital period (sidereal)	5.81 yr (2120.4 d)
Mean anomaly	83.4390°
Mean motion	0° 10m 11.208s / day
Inclination	21.335°
Longitude of ascending node	175.926°
Argument of perihelion	287.377°
Earth MOID	1.98994 AU (297.691 Gm)
Jupiter MOID	1.66162 AU (248.575 Gm)
TJupiter	3.071
Physical characteristics
Mean radius	38.01±0.8 km
Synodic rotation period	15.78 h,[3] 41.40 h (1.725 d)[2]
Geometric albedo	0.0485±0.002
Absolute magnitude (H)	9.7

Photometric observations at the Oakley Observatory in Terre Haute, Indiana, during 2007 were used to build a light curve for 892 Seeligeria. The asteroid displayed a rotation period of 15.78 ± 0.04 hours and a brightness variation of 0.35 ± 0.07 in magnitude.^[3]

Seeligeria is a member of the Alauda family (902),^[1] a large family of typically bright carbonaceous asteroids and named after its parent body, 702 Alauda.^[4]: 23

References

1. "Asteroid 892 Seeligeria – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 24 October 2019.
2. "892 Seeligeria (1918 DR)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 3 May 2016.
3. Shipley, Heath; et al. (September 2008), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: September 2007" (PDF), The Minor Planet Bulletin, 35 (3): 99–101, Bibcode:2008MPBu...35...99S, archived from the original (PDF) on 2 June 2013, retrieved 23 March 2013.
4. Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131. S2CID 119280014.

External links

• 892 Seeligeria at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 892 Seeligeria at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters