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 |
|---|---|---|---|---|---|---|
| 1987-09-28 06:31:30 | A | 00 42 03.94 | -24 37 20.2 | 17.2 | – | 675 |
| 1987-09-28 07:10:29 | A | 00 41 58.21 | -24 37 14.8 | – | – | 675 |
| 1990-09-22 09:20:00 | A | 20 12 07.16 | -52 01 34.5 | – | – | 413 |
| 1990-09-22 10:08:18 | A | 20 12 43.16 | -51 58 49.8 | – | – | 413 |
| 1990-09-22 10:48:43 | A | 20 13 13.13 | -51 56 29.7 | – | – | 413 |
| 1990-09-23 15:23:49 | A | 20 33 03.46 | -50 16 13.8 | – | – | 413 |
| 1990-09-24 09:30:40 | A | 20 43 56.85 | -49 13 17.7 | – | – | 413 |
| 1990-09-24 09:33:00 | A | 20 43 58.24 | -49 13 09.6 | – | – | 413 |
| 1990-09-24 14:49:52 | A | 20 46 50.48 | -48 54 43.3 | – | – | 413 |
| 1990-09-25 15:38:00 | – | 20 59 24.73 | -47 30 43.4 | – | m | 323 |
| 1990-10-15 06:52:45 | A | 22 31 50.30 | -31 09 54.3 | – | – | 568 |
| 1990-10-15 08:58:43 | A | 22 32 00.95 | -31 07 14.9 | – | – | 568 |
| 1990-10-16 12:14:30 | A | 22 34 22.38 | -30 33 24.9 | 17.3 | – | 474 |
| 1990-10-16 13:06:49 | A | 22 34 26.78 | -30 32 20.6 | – | – | 474 |
| 2005-02-04 03:59:24 | C | 04 40 05.78 | +11 16 12.7 | – | c | 691 |
| 2005-02-04 04:34:38 | C | 04 40 05.08 | +11 16 18.5 | – | c | 691 |
| 2005-02-04 05:07:30 | C | 04 40 04.43 | +11 16 23.2 | – | c | 691 |
| 2005-02-05 02:44:59 | C | 04 39 41.89 | +11 19 52.9 | – | c | 673 |
| 2005-02-05 02:56:30 | C | 04 39 41.70 | +11 19 54.8 | – | c | 673 |
| 2005-02-05 03:07:30 | C | 04 39 41.52 | +11 19 56.6 | – | c | 673 |
| 2005-02-05 03:16:50 | C | 04 39 41.36 | +11 19 58.2 | – | c | 673 |
| 2005-02-05 03:26:20 | C | 04 39 41.23 | +11 19 59.6 | – | c | 673 |
| 2005-04-01 02:52:14 | C | 04 55 55.71 | +15 36 40.6 | – | c | 691 |
| 2005-04-01 03:07:12 | C | 04 55 56.23 | +15 36 43.1 | – | c | 691 |
| 2007-10-28 08:25:13 | C | 06 08 02.75 | +11 09 35.3 | – | o | H55 |
| 2007-10-28 08:50:04 | C | 06 08 02.45 | +11 09 31.4 | – | o | H55 |
| 2007-10-28 09:14:51 | C | 06 08 01.95 | +11 09 28.4 | – | o | H55 |
| 2007-12-25 06:36:27 | C | 05 11 52.15 | +09 27 55.3 | – | o | H55 |
| 2007-12-25 06:54:39 | C | 05 11 51.18 | +09 27 57.3 | – | o | H55 |
| 2007-12-25 07:13:07 | C | 05 11 50.22 | +09 27 58.1 | – | o | H55 |
| 2007-12-26 05:07:10 | C | 05 10 41.17 | +09 28 17.1 | – | o | H55 |
| 2007-12-26 05:35:47 | C | 05 10 39.61 | +09 28 18.0 | – | o | H55 |
| 2007-12-26 06:02:17 | C | 05 10 38.17 | +09 28 18.5 | – | o | H55 |
| 2008-01-01 06:56:14 | C | 05 03 12.34 | +09 32 33.8 | – | r | G96 |
| 2008-01-01 07:06:03 | C | 05 03 11.88 | +09 32 34.5 | – | r | G96 |
| 2008-01-01 07:15:52 | C | 05 03 11.37 | +09 32 34.7 | – | r | G96 |
| 2008-01-01 07:25:45 | C | 05 03 10.87 | +09 32 35.7 | – | r | G96 |
| 2010-12-10 07:13:20 | C | 05 22 48.50 | +09 18 59.5 | – | r | G96 |
| 2010-12-10 07:26:44 | C | 05 22 47.78 | +09 18 59.0 | – | r | G96 |
| 2010-12-10 07:40:01 | C | 05 22 47.10 | +09 18 58.2 | – | r | G96 |
| 2010-12-10 07:53:29 | C | 05 22 46.41 | +09 18 58.0 | – | r | G96 |
| 2013-11-28 04:39:27 | C | 05 29 03.25 | +09 26 49.7 | – | u | 807 |
| 2013-11-28 04:48:42 | C | 05 29 02.82 | +09 26 48.8 | – | u | 807 |
| 2013-11-28 04:59:58 | C | 05 29 02.30 | +09 26 47.5 | – | u | 807 |
| 2013-12-29 09:30:00 | C | 04 52 01.160 | +09 04 25.69 | – | L | F51 |
| 2013-12-29 09:49:51 | C | 04 52 00.214 | +09 04 26.14 | – | L | F51 |
| 2013-12-29 10:29:50 | C | 04 51 58.311 | +09 04 27.47 | – | L | F51 |
| 2015-10-08 14:04:03 | C | 03 56 03.132 | +04 32 46.80 | – | L | F51 |
| 2015-10-08 14:19:24 | C | 03 56 02.615 | +04 32 42.94 | – | L | F51 |
| 2015-10-08 14:40:30 | C | 03 56 01.947 | +04 32 37.48 | – | L | F51 |