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 |
|---|---|---|---|---|---|---|
| 2024-09-14 13:57:47 | C | 03 48 00.802 | +04 58 35.25 | – | X | F51 |
| 2024-09-14 14:26:45 | C | 03 48 00.313 | +04 58 27.50 | – | X | F51 |
| 2024-09-14 14:43:45 | C | 03 48 00.030 | +04 58 22.48 | – | X | F51 |
| 2024-09-26 14:32:25 | C | 03 41 23.527 | +03 32 15.93 | – | X | F52 |
| 2024-09-26 14:45:51 | C | 03 41 23.097 | +03 32 11.73 | – | X | F52 |
| 2024-09-26 14:59:16 | C | 03 41 22.692 | +03 32 07.48 | – | X | F52 |
| 2024-10-03 10:11:29 | C | 03 35 49.452 | +02 40 00.33 | – | X | F52 |
| 2024-10-03 10:28:54 | C | 03 35 48.790 | +02 39 54.72 | – | X | F52 |
| 2024-10-03 10:46:16 | C | 03 35 48.108 | +02 39 49.02 | – | X | F52 |
| 2024-10-03 11:03:34 | C | 03 35 47.442 | +02 39 43.49 | – | X | F52 |
| 2024-10-05 08:52:21 | C | 03 34 00.541 | +02 24 54.18 | – | V | G96 |
| 2024-10-05 08:59:49 | C | 03 34 00.239 | +02 24 52.24 | – | V | G96 |
| 2024-10-05 09:07:16 | C | 03 33 59.940 | +02 24 49.82 | – | V | G96 |
| 2024-10-05 09:14:42 | C | 03 33 59.623 | +02 24 47.34 | – | V | G96 |
| 2024-10-07 13:26:18 | C | 03 31 51.296 | +02 07 56.44 | – | X | F51 |
| 2024-10-07 13:45:16 | C | 03 31 50.482 | +02 07 50.35 | – | X | F51 |
| 2024-10-07 14:04:24 | C | 03 31 49.660 | +02 07 44.21 | – | X | F51 |
| 2024-10-07 14:22:49 | C | 03 31 48.852 | +02 07 38.25 | – | X | F51 |
| 2024-10-12 12:10:52 | C | 03 26 35.947 | +01 29 53.22 | – | X | F52 |
| 2024-10-12 12:27:20 | C | 03 26 35.166 | +01 29 48.09 | – | X | F52 |
| 2024-10-12 12:43:51 | C | 03 26 34.374 | +01 29 42.72 | – | X | F52 |
| 2024-10-22 12:11:53 | C | 03 14 38.618 | +00 16 50.89 | – | X | F51 |
| 2024-10-22 12:30:20 | C | 03 14 37.626 | +00 16 45.47 | – | X | F51 |
| 2024-10-22 12:48:41 | C | 03 14 36.647 | +00 16 40.36 | – | X | F51 |
| 2024-10-22 13:07:00 | C | 03 14 35.650 | +00 16 35.12 | – | X | F51 |
| 2024-10-24 08:31:27 | C | 03 12 17.842 | +00 04 16.82 | – | V | G96 |
| 2024-10-24 08:38:49 | C | 03 12 17.449 | +00 04 14.59 | – | V | G96 |
| 2024-10-24 08:46:11 | C | 03 12 17.021 | +00 04 12.54 | – | V | G96 |
| 2024-10-24 08:53:35 | C | 03 12 16.654 | +00 04 10.34 | – | V | G96 |
| 2024-10-30 09:25:55 | C | 03 04 28.231 | -00 33 52.06 | – | X | F52 |
| 2024-10-30 09:43:05 | C | 03 04 27.270 | -00 33 56.21 | – | X | F52 |
| 2024-10-30 10:00:20 | C | 03 04 26.315 | -00 34 00.51 | – | X | F52 |
| 2024-10-30 10:17:33 | C | 03 04 25.357 | -00 34 04.83 | – | X | F52 |
| 2024-10-30 10:21:06 | C | 03 04 25.156 | -00 34 05.58 | – | X | F51 |
| 2024-10-30 10:37:36 | C | 03 04 24.240 | -00 34 09.60 | – | X | F51 |
| 2024-10-30 10:54:09 | C | 03 04 23.320 | -00 34 13.65 | – | X | F51 |
| 2024-10-30 11:10:40 | C | 03 04 22.402 | -00 34 17.53 | – | X | F51 |
| 2024-11-01 07:30:04 | C | 03 01 57.504 | -00 44 56.83 | – | V | G96 |
| 2024-11-01 07:37:30 | C | 03 01 57.072 | -00 44 58.63 | – | V | G96 |
| 2024-11-01 07:44:57 | C | 03 01 56.694 | -00 44 59.93 | – | V | G96 |
| 2024-11-01 07:52:24 | C | 03 01 56.255 | -00 45 01.55 | – | V | G96 |
| 2024-11-23 08:29:12 | C | 02 35 14.096 | -02 05 19.77 | – | X | F51 |
| 2024-11-23 08:46:24 | C | 02 35 13.324 | -02 05 21.05 | – | X | F51 |
| 2024-11-23 09:03:37 | C | 02 35 12.554 | -02 05 22.00 | – | X | F51 |
| 2024-11-23 09:20:49 | C | 02 35 11.783 | -02 05 23.07 | – | X | F51 |
| 2024-12-18 05:21:58 | C | 02 16 32.504 | -01 49 11.94 | – | X | F51 |
| 2024-12-18 05:38:22 | C | 02 16 32.184 | -01 49 10.09 | – | X | F51 |
| 2024-12-18 05:54:43 | C | 02 16 31.857 | -01 49 08.41 | – | X | F51 |
| 2024-12-18 06:11:04 | C | 02 16 31.539 | -01 49 06.69 | – | X | F51 |
| 2024-12-22 05:39:49 | C | 02 14 58.094 | -01 37 49.32 | – | X | F52 |