1189 Terentia

1189 Terentia

Discovery [1]
Discovered by	G. Neujmin
Discovery site	Simeiz Observatory
Discovery date	17 September 1930
Designations
MPC designation	1189 Terentia
Named after	Lidiya Terent'eva (orbit computer)[2]
Alternative names	1930 SG · 1935 SK2 A915 TJ
Minor planet category	main-belt
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	85.24 yr (31134 days)
Aphelion	3.2696 AU (489.13 Gm)
Perihelion	2.5919 AU (387.74 Gm)
Semi-major axis	2.9307 AU (438.43 Gm)
Eccentricity	0.11563
Orbital period	5.02 yr (1832.6 d)
Mean anomaly	24.903°
Mean motion	0° 11^m 47.184^s / day
Inclination	9.8654°
Longitude of ascending node	275.25°
Argument of perihelion	95.711°
Earth MOID	1.61433 AU (241.500 Gm)
Jupiter MOID	2.27258 AU (339.973 Gm)
Jupiter Tisserand parameter	3.244
Physical characteristics
Dimensions	55.9 km
Mean radius	27.94±1.6 km
Rotation period	19.308 h (0.8045 d)
Geometric albedo	0.0566±0.007
Spectral type	SMASS = Ch
Absolute magnitude (H)	9.9

1189 Terentia, provisional designation 1930 SG, is a main-belt asteroid discovered on September 17, 1930, by Russian astronomer Grigory Neujmin at the Crimean Simeiz Observatory. The carbonaceous asteroid, classified as Ch-type in the SMASS taxonomy system, measures about 56 kilometers in diameter.^[1]

It was named after Lidiya Terent'eva (1879–1933), female collaborator at the Simeis Observatory.^[1]

References

1. "JPL Small-Body Database Browser: 1189 Terentia (1930 SG)" (2015-09-14 last obs.). Jet Propulsion Laboratory. Retrieved 1 May 2016.
2. Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1189) Terentia. Springer Berlin Heidelberg. p. 100. ISBN 978-3-540-29925-7. Retrieved October 2015.

External links

• Dictionary of Minor Planet Names, Google books
• 1189 Terentia at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters