Global Information1028 Lydina information
| Discovery[1] | |
|---|---|
| Discovered by | V. Albitzkij |
| Discovery site | Simeiz Obs. |
| Discovery date | 6 November 1923 |
| Designations | |
MPC designation | (1028) Lydina |
Named after | Lydia Il'inichna Albitskaya[2] (discoverer's wife) |
Alternative designations | 1923 PG · A907 JF A914 JA |
Minor planet category | main-belt[1] · (outer)[3][4] background[5] · Cybele[a] |
| Orbital characteristics[3] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 110.80 yr (40,471 d) |
| Aphelion | 3.7695 AU |
| Perihelion | 3.0454 AU |
Semi-major axis | 3.4075 AU |
| Eccentricity | 0.1062 |
Orbital period (sidereal) | 6.29 yr (2,297 d) |
Mean anomaly | 346.68° |
Mean motion | 0° 9m 24.12s / day |
| Inclination | 9.3940° |
Longitude of ascending node | 62.833° |
Argument of perihelion | 24.747° |
| Physical characteristics | |
Mean diameter | 71.38±2.2 km[6] 81.85±21.71 km[7] 88.526±0.762 km[8] 96.830±1.081 km[9] 97.18±1.38 km[10] |
Synodic rotation period | 11.674±0.002 h[11] 11.680±0.005 h[12] 15.69 h[13] 48±1 h (poor)[14] |
Geometric albedo | 0.0318±0.0054[9] 0.032±0.001[10] 0.038±0.006[8] 0.04±0.05[7] 0.0586±0.004[6] |
Spectral type | Tholen = C[3][4] B–V = 0.684[3] U–B = 0.276[3] |
Absolute magnitude (H) | 9.43[3][4][6][7][9][10] 10.31±0.76[15] |
1028 Lydina, provisional designation 1923 PG, is a carbonaceous background asteroid and member of the Cybele group from the outermost regions of the asteroid belt, approximately 82 kilometers (50 miles) in diameter. It was discovered at the Simeiz Observatory on the Crimean peninsula on 6 November 1923, by Soviet astronomer Vladimir Albitsky, who named it after his wife, Lydia Il'inichna Albitskaya.[1][2] The dark C-type asteroid has a rotation period of 11.68 hours.[4]
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