1269 Rollandia

1269 Rollandia
Discovery
Discovered by	G. Neujmin
Discovery site	Simeiz Obs.
Discovery date	20 September 1930
Designations
MPC designation	(1269) Rollandia
Pronunciation	/rɒˈlændiə/
Named after	Romain Rolland; (French writer)
Alternative designations	1930 SH · 1926 GC1; 1931 VY · 1936 LE; 1961 PB · A902 EA; A906 SA · A907 WB; A918 EG
Minor planet category	main-belt · (outer); Hilda · background
Orbital characteristics
	Epoch 27 April 2019 (JD 2458600.5)
	Uncertainty parameter 0
Observation arc	117.19 yr (42,804 d)
Aphelion	4.2910 AU
Perihelion	3.5136 AU
Semi-major axis	3.9023 AU
Eccentricity	0.0996
Orbital period (sidereal)	7.71 yr (2,816 d)
Mean anomaly	352.88°
Mean motion	0° 7m 40.44s / day
Inclination	2.7586°
Longitude of ascending node	134.71°
Argument of perihelion	19.460°
Jupiter MOID	0.7004 AU
TJupiter	3.0550
Physical characteristics
Mean diameter	104.893±0.624 km; 105.19±2.8 km; 107.85±1.66 km
Synodic rotation period	17.36±0.01 h
Geometric albedo	0.045±0.002; 0.0473±0.003; 0.048±0.000
Spectral type	Tholen = D; B–V = 0.775; U–B = 0.271
Absolute magnitude (H)	8.7; 8.82

1269 Rollandia, provisional designation 1930 SH, is a dark Hildian asteroid from the outermost region of the asteroid belt, approximately 105 kilometers (65 mi) in diameter.^[4] It was discovered on 20 September 1930, by Soviet astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula.^[3] The asteroid was named after French writer Romain Rolland.^[2] The D-type asteroid has a rotation period of 17.4 hours. It was one of the last 100-kilometer sized asteroids discovered in the main belt.

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1269 Rollandia

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