Global Information1189 Terentia information
 Modelled shape of Terentia from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | G. Neujmin |
| Discovery site | Simeiz Obs. |
| Discovery date | 17 September 1930 |
| Designations | |
MPC designation | (1189) Terentia |
Named after | Lidiya Terent'eva (orbit computer)[2] |
Alternative designations | 1930 SG · 1935 SK2 A915 TJ |
Minor planet category | main-belt · (outer)[3] Terentia[4] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 101.46 yr (37,057 days) |
| Aphelion | 3.2681 AU |
| Perihelion | 2.5914 AU |
Semi-major axis | 2.9298 AU |
| Eccentricity | 0.1155 |
Orbital period (sidereal) | 5.01 yr (1,832 days) |
Mean anomaly | 103.65° |
Mean motion | 0° 11m 47.4s / day |
| Inclination | 9.8671° |
Longitude of ascending node | 275.24° |
Argument of perihelion | 95.571° |
| Physical characteristics | |
| Dimensions | 55.40±14.41 km[5] 55.88±3.2 km[6] 55.94 km (derived)[3] 57.23±17.09 km[7] 59.246±0.201 km[8] 61.140±1.045 km[9] 62.81±0.85 km[10] 70.90±0.51 km[11] |
Synodic rotation period | 19.30±0.01 h[12] 19.308±0.002 h[13] |
Geometric albedo | 0.042±0.006[11] 0.045±0.001[10] 0.0473±0.0053[9] 0.05±0.04[5][7] 0.0566±0.007[6] 0.0619 (derived)[3] |
Spectral type | SMASS = Ch[1] · C[3] |
Absolute magnitude (H) | 9.80[5][11] · 9.84±0.26[14] · 9.9[1] · 9.96[7][3] · 10.00[6][9][10] |
1189 Terentia, provisional designation 1930 SG, is a carbonaceous Terentian asteroid from the outer regions of the asteroid belt, approximately 56 kilometers in diameter and the namesake of its family. The asteroid was discovered by Russian astronomer Grigory Neujmin at Simeiz Observatory on 17 September 1930.[15]
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