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 |
|---|---|---|---|---|---|---|
| 2024-12-22 06:09:40 | C | 02 14 57.639 | -01 37 45.36 | – | X | F52 |
| 2024-12-22 06:24:34 | C | 02 14 57.418 | -01 37 43.40 | – | X | F52 |
| 2024-12-31 12:40:21 | C | 02 12 48.540 | -01 04 26.09 | – | – | O18 |
| 2024-12-31 15:37:22 | C | 02 12 47.497 | -01 03 55.92 | – | – | O18 |
| 2025-01-21 12:54:20 | C | 02 14 43.035 | +00 37 24.46 | – | – | O18 |
| 2025-01-21 15:11:17 | C | 02 14 44.597 | +00 37 55.72 | – | – | O18 |
| 2025-01-22 12:56:07 | C | 02 15 00.662 | +00 42 53.57 | – | – | O18 |
| 2025-01-22 15:07:30 | C | 02 15 02.276 | +00 43 23.93 | – | – | O18 |
| 2025-01-27 13:09:22 | C | 02 16 43.465 | +01 10 55.03 | – | – | O18 |
| 2025-01-27 13:10:59 | C | 02 16 43.491 | +01 10 55.30 | – | – | O18 |
| 2025-10-19 11:59:01 | C | 05 27 23.522 | +10 09 20.08 | – | X | F52 |
| 2025-10-19 12:14:42 | C | 05 27 23.263 | +10 09 18.05 | – | X | F52 |
| 2025-10-19 12:30:23 | C | 05 27 23.002 | +10 09 15.61 | – | X | F52 |
| 2025-10-19 12:45:59 | C | 05 27 22.717 | +10 09 13.61 | – | X | F52 |
| 2025-11-24 09:10:16 | C | 04 59 36.565 | +08 17 58.41 | – | X | F52 |
| 2025-11-24 09:28:02 | C | 04 59 35.778 | +08 17 56.55 | – | X | F52 |
| 2025-11-24 10:03:43 | C | 04 59 34.146 | +08 17 53.02 | – | X | F52 |
| 2025-11-28 12:30:32 | C | 04 55 06.295 | +08 08 30.79 | – | X | F51 |
| 2025-11-28 12:47:40 | C | 04 55 05.481 | +08 08 29.32 | – | X | F51 |
| 2025-11-28 13:04:48 | C | 04 55 04.698 | +08 08 27.74 | – | X | F51 |
| 2025-11-28 13:21:58 | C | 04 55 03.899 | +08 08 26.36 | – | X | F51 |
| 2025-12-12 10:37:53 | C | 04 39 28.428 | +07 46 22.06 | – | X | F52 |
| 2025-12-12 10:54:51 | C | 04 39 27.628 | +07 46 21.55 | – | X | F52 |
| 2025-12-12 11:28:39 | C | 04 39 26.031 | +07 46 20.20 | – | X | F52 |
| 2026-01-11 07:13:47 | C | 04 11 34.410 | +08 00 07.07 | – | X | F51 |
| 2026-01-11 07:31:33 | C | 04 11 33.896 | +08 00 08.61 | – | X | F51 |
| 2026-01-11 07:49:21 | C | 04 11 33.391 | +08 00 10.06 | – | X | F51 |