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 |
|---|---|---|---|---|---|---|
| 2015-10-08 14:55:56 | C | 03 56 01.411 | +04 32 33.48 | – | L | F51 |
| 2015-10-09 13:57:46 | C | 03 55 16.149 | +04 26 33.02 | – | L | F51 |
| 2015-10-09 14:13:08 | C | 03 55 15.620 | +04 26 28.93 | – | L | F51 |
| 2015-10-09 14:28:30 | C | 03 55 15.103 | +04 26 25.08 | – | L | F51 |
| 2015-10-09 14:43:58 | C | 03 55 14.568 | +04 26 20.99 | – | L | F51 |
| 2015-10-18 10:52:22 | C | 03 47 20.903 | +03 31 04.77 | – | L | F51 |
| 2015-10-18 11:07:42 | C | 03 47 20.271 | +03 31 00.68 | – | L | F51 |
| 2015-10-18 11:23:05 | C | 03 47 19.613 | +03 30 56.84 | – | L | F51 |
| 2015-10-19 10:41:02 | C | 03 46 21.979 | +03 24 57.24 | – | L | F51 |
| 2015-10-19 10:56:02 | C | 03 46 21.325 | +03 24 53.37 | – | L | F51 |
| 2015-10-19 11:11:06 | C | 03 46 20.689 | +03 24 49.70 | – | L | F51 |
| 2015-10-21 11:55:08 | C | 03 44 16.785 | +03 12 23.95 | – | L | F51 |
| 2015-10-21 12:10:31 | C | 03 44 16.108 | +03 12 20.08 | – | L | F51 |
| 2015-10-21 12:25:50 | C | 03 44 15.431 | +03 12 16.29 | – | L | F51 |
| 2015-10-21 12:41:04 | C | 03 44 14.760 | +03 12 12.60 | – | L | F51 |
| 2015-11-03 10:23:04 | C | 03 29 51.107 | +01 58 55.81 | – | L | F51 |
| 2015-11-03 10:40:06 | C | 03 29 50.259 | +01 58 52.30 | – | L | F51 |
| 2015-11-03 10:57:11 | C | 03 29 49.412 | +01 58 48.69 | – | L | F51 |
| 2015-11-17 08:19:49 | C | 03 13 24.786 | +00 58 42.85 | – | L | F51 |
| 2015-11-17 08:35:38 | C | 03 13 24.009 | +00 58 40.38 | – | L | F51 |
| 2015-11-17 08:51:32 | C | 03 13 23.236 | +00 58 38.12 | – | L | F51 |
| 2018-10-17 14:22:37 | C | 03 39 45.294 | +02 48 05.89 | – | U | F52 |
| 2018-10-17 15:00:43 | C | 03 39 43.607 | +02 47 55.37 | – | U | F52 |
| 2018-10-18 10:27:49 | C | 03 38 52.94 | +02 42 36.9 | – | V | G96 |
| 2018-10-18 10:35:10 | C | 03 38 52.65 | +02 42 34.3 | – | V | G96 |
| 2018-10-18 10:42:30 | C | 03 38 52.28 | +02 42 32.3 | – | V | G96 |
| 2018-11-02 09:09:48 | C | 03 21 42.94 | +01 12 23.1 | – | V | G96 |
| 2018-11-02 09:17:09 | C | 03 21 42.53 | +01 12 21.8 | – | V | G96 |
| 2018-11-02 09:24:32 | C | 03 21 42.15 | +01 12 20.2 | – | V | G96 |
| 2018-11-02 09:31:56 | C | 03 21 41.76 | +01 12 17.1 | – | V | G96 |
| 2018-11-03 07:29:38 | C | 03 20 35.19 | +01 07 26.3 | – | V | G96 |
| 2018-11-03 07:37:01 | C | 03 20 34.75 | +01 07 24.9 | – | V | G96 |
| 2018-11-03 07:44:27 | C | 03 20 34.36 | +01 07 22.6 | – | V | G96 |
| 2018-11-03 07:51:50 | C | 03 20 34.03 | +01 07 21.7 | – | V | G96 |
| 2018-11-12 07:28:38 | C | 03 09 37.36 | +00 25 23.4 | – | V | G96 |
| 2018-11-12 07:36:07 | C | 03 09 36.98 | +00 25 21.8 | – | V | G96 |
| 2018-11-12 07:43:37 | C | 03 09 36.60 | +00 25 20.9 | – | V | G96 |
| 2018-11-12 07:51:10 | C | 03 09 36.24 | +00 25 19.8 | – | V | G96 |
| 2019-11-24 09:13:39 | C | 05 15 59.32 | +08 58 11.2 | – | V | G96 |
| 2019-11-24 09:21:02 | C | 05 15 58.97 | +08 58 10.7 | – | V | G96 |
| 2019-11-24 09:28:25 | C | 05 15 58.65 | +08 58 09.7 | – | V | G96 |
| 2019-11-24 09:35:48 | C | 05 15 58.30 | +08 58 08.3 | – | V | G96 |
| 2019-12-24 08:47:24 | C | 04 41 55.851 | +08 21 44.37 | – | U | F51 |
| 2019-12-24 09:05:41 | C | 04 41 54.994 | +08 21 44.53 | – | U | F51 |
| 2019-12-24 09:23:55 | C | 04 41 54.149 | +08 21 44.66 | – | U | F51 |
| 2019-12-24 09:42:05 | C | 04 41 53.312 | +08 21 44.38 | – | U | F51 |
| 2019-12-28 09:34:33 | C | 04 37 38.521 | +08 22 57.41 | – | U | F51 |
| 2019-12-28 09:50:57 | C | 04 37 37.774 | +08 22 57.66 | – | U | F51 |
| 2019-12-28 10:07:14 | C | 04 37 37.095 | +08 22 58.05 | – | U | F51 |
| 2019-12-28 10:23:37 | C | 04 37 36.368 | +08 22 58.25 | – | U | F51 |