IAA Minor Planet Database| Epoch (TDB) | 2025-11-21 (JD 2461000.5) |
|---|---|
| Eccentricity (e) | 0.7628889553 ± 5.35e-08 |
| Semi-major axis (a) | 2.1074693877 AU ± 4.30e-09 |
| Inclination (i) | 11.61757357° ± 2.67e-06 |
| Long. of Asc. Node (Ω) | 136.01918391° ± 3.61e-05 |
| Arg. of Perihelion (ω) | 107.91071535° ± 3.53e-05 |
| Mean Anomaly (M) | 210.82873660° ± 4.89e-06 |
| Mean Motion (n) | 0.3221590706°/day ± 9.85e-10 |
| Perihelion dist (q) | 0.49970427 AU ± 1.13e-07 |
| Aphelion dist (Q) | 3.71523451 AU ± 1.13e-07 |
| Orbital Period | 3.05943980 yr ± 9.35e-09 |
| H (abs. magnitude) | 16.40 |
|---|---|
| G (slope) | 0.15 |
1987 SB4
| Source | IAA |
|---|---|
| Solution Date | 2026-05-31 |
| RMS Residual | 0.183″ |
| Uncertainty | 0 |
| Orbit Type | Apollo |
| MOID | 0.033012 AU |
| Observations Used | 242 |
| Oppositions | 26 |
| Arc Total | 1987-2026 |
| First Observation Used | 1987-09-28 |
| Last Observation Used | 2026-01-11 |
| Date | Type | RA | Dec | Mag | Band | Observatory |
|---|---|---|---|---|---|---|
| 2020-11-04 12:15:54 | C | 11 00 31.25 | +04 30 53.4 | – | V | G96 |
| 2020-11-04 12:23:32 | C | 11 00 32.39 | +04 30 48.2 | – | V | G96 |
| 2020-11-04 12:31:10 | C | 11 00 33.51 | +04 30 42.4 | – | V | G96 |
| 2020-11-04 12:38:47 | C | 11 00 34.63 | +04 30 37.3 | – | V | G96 |
| 2020-11-16 12:11:44 | C | 11 47 29.25 | +00 45 11.3 | – | V | 703 |
| 2020-11-16 12:34:37 | C | 11 47 33.56 | +00 44 48.4 | – | V | 703 |
| 2020-11-22 12:36:59 | C | 12 14 57.02 | -01 27 03.0 | – | V | G96 |
| 2020-11-22 12:42:28 | C | 12 14 58.13 | -01 27 08.0 | – | V | G96 |
| 2020-11-22 12:47:56 | C | 12 14 59.23 | -01 27 13.5 | – | V | G96 |
| 2020-11-22 12:53:25 | C | 12 15 00.32 | -01 27 18.5 | – | V | G96 |
| 2020-11-26 12:46:07 | C | 12 34 57.81 | -03 02 05.7 | – | V | 703 |
| 2020-11-26 12:51:19 | C | 12 34 58.82 | -03 02 09.9 | – | V | 703 |
| 2020-11-26 12:56:31 | C | 12 34 59.92 | -03 02 16.2 | – | V | 703 |
| 2020-11-26 13:01:43 | C | 12 35 00.96 | -03 02 21.5 | – | V | 703 |
| 2020-12-02 13:11:35 | C | 13 07 54.06 | -05 34 03.8 | – | U | I41 |
| 2020-12-02 13:18:21 | C | 13 07 55.70 | -05 34 11.3 | – | U | I41 |
| 2020-12-02 13:25:07 | C | 13 07 57.31 | -05 34 18.6 | – | U | I41 |
| 2020-12-02 13:31:53 | C | 13 07 58.90 | -05 34 25.7 | – | U | I41 |
| 2020-12-04 13:09:04 | C | 13 19 38.70 | -06 26 26.7 | – | U | I41 |
| 2020-12-04 13:22:35 | C | 13 19 42.07 | -06 26 40.8 | – | U | I41 |
| 2020-12-04 13:29:21 | C | 13 19 43.73 | -06 26 48.6 | – | U | I41 |
| 2020-12-04 13:36:07 | C | 13 19 45.38 | -06 26 55.7 | – | U | I41 |
| 2020-12-15 12:55:41 | C | 14 31 28.32 | -11 17 37.7 | – | V | 703 |
| 2020-12-15 13:01:33 | C | 14 31 30.08 | -11 17 44.7 | – | V | 703 |
| 2020-12-15 13:07:25 | C | 14 31 31.79 | -11 17 49.8 | – | V | 703 |
| 2020-12-15 13:13:17 | C | 14 31 33.63 | -11 17 57.7 | – | V | 703 |
| 2020-12-15 13:16:14 | C | 14 31 34.49 | -11 18 00.7 | – | U | I41 |
| 2020-12-15 13:23:01 | C | 14 31 36.47 | -11 18 08.1 | – | U | I41 |
| 2020-12-15 13:29:48 | C | 14 31 38.44 | -11 18 15.2 | – | U | I41 |
| 2020-12-15 13:36:35 | C | 14 31 40.44 | -11 18 22.4 | – | U | I41 |
| 2021-09-11 10:28:07 | C | 03 55 35.09 | +05 58 28.5 | – | V | G96 |
| 2021-09-11 10:34:54 | C | 03 55 35.03 | +05 58 26.5 | – | V | G96 |
| 2021-09-11 10:41:42 | C | 03 55 34.96 | +05 58 25.2 | – | V | G96 |
| 2021-09-11 10:48:30 | C | 03 55 34.92 | +05 58 23.3 | – | V | G96 |
| 2021-09-15 12:39:57 | C | 03 54 28.975 | +05 33 54.88 | – | U | F51 |
| 2021-09-15 12:57:43 | C | 03 54 28.709 | +05 33 50.48 | – | U | F51 |
| 2021-09-15 13:15:33 | C | 03 54 28.450 | +05 33 45.50 | – | U | F51 |
| 2021-09-15 13:33:23 | C | 03 54 28.189 | +05 33 41.14 | – | U | F51 |
| 2021-09-30 13:11:11 | C | 03 46 28.503 | +03 53 42.94 | – | U | F52 |
| 2021-09-30 13:27:07 | C | 03 46 27.995 | +03 53 38.22 | – | U | F52 |
| 2021-09-30 13:43:05 | C | 03 46 27.490 | +03 53 33.34 | – | U | F52 |
| 2021-10-28 08:10:49 | C | 03 17 40.78 | +00 41 47.9 | – | V | G96 |
| 2021-10-28 08:18:16 | C | 03 17 40.36 | +00 41 45.8 | – | V | G96 |
| 2021-10-28 08:25:43 | C | 03 17 39.99 | +00 41 44.2 | – | V | G96 |
| 2021-10-28 08:33:10 | C | 03 17 39.60 | +00 41 42.1 | – | V | G96 |
| 2021-10-28 10:47:41 | C | 03 17 32.681 | +00 41 09.04 | – | U | F51 |
| 2021-10-28 11:03:52 | C | 03 17 31.824 | +00 41 05.02 | – | U | F51 |
| 2021-10-28 11:20:07 | C | 03 17 30.960 | +00 41 00.83 | – | U | F51 |
| 2021-10-28 11:36:24 | C | 03 17 30.104 | +00 40 56.78 | – | U | F51 |
| 2021-11-01 11:27:06 | C | 03 12 29.924 | +00 17 44.37 | – | U | F52 |