IAA Minor Planet Database| Epoch (TDB) | 2025-11-21 (JD 2461000.5) |
|---|---|
| Eccentricity (e) | 0.3248812195 ± 2.00e+00 |
| Semi-major axis (a) | 1.2485978808 AU ± 3.00e+00 |
| Inclination (i) | 15.31792369° ± 4.00e+00 |
| Long. of Asc. Node (Ω) | 8.87018800° ± 5.00e+00 |
| Arg. of Perihelion (ω) | 233.73577246° ± 6.00e+00 |
| Mean Anomaly (M) | 7.07531822° ± 6.68e-05 |
| Mean Motion (n) | 0.7064450492°/day ± 2.55e+00 |
| Perihelion dist (q) | 0.84295188 AU ± 3.22e+00 |
| Aphelion dist (Q) | 1.65424388 AU ± 4.69e+00 |
| Orbital Period | 1.39519172 yr ± 5.03e+00 |
| NGA Model | r2 |
| A2 | -1.38437815e-06 AU/d² |
| H (abs. magnitude) | 17.14 |
|---|---|
| G (slope) | 0.15 |
1985 SD, 1985 TO2
| Source | IAA |
|---|---|
| Solution Date | 2026-04-26 |
| RMS Residual | 0.481″ |
| Uncertainty | 0 |
| Orbit Type | Apollo |
| MOID | 0.045618 AU |
| Observations Used | 2393 |
| Gaia Obs Used | 147 |
| Oppositions | 18 |
| Arc Total | 1953-2017 |
| First Observation Used | 1953-10-12 |
| Last Observation Used | 2025-01-18 |
| Date | Type | RA | Dec | Mag | Band | Observatory |
|---|---|---|---|---|---|---|
| 1999-03-09 19:39:07 | C | 12 13 50.76 | +74 59 24.0 | – | z | 057 |
| 1999-03-09 19:42:23 | C | 12 13 49.05 | +74 59 35.0 | – | z | 057 |
| 1999-03-09 19:44:16 | C | 12 13 49.05 | +74 59 42.7 | – | z | 057 |
| 1999-03-11 20:18:44 | C | 11 52 04.95 | +78 05 08.3 | – | – | 557 |
| 1999-03-11 22:40:53 | C | 11 50 26.24 | +78 15 06.2 | – | – | 557 |
| 1999-03-11 23:42:20 | C | 11 49 41.75 | +78 19 19.9 | – | – | 557 |
| 1999-03-12 00:12:24 | C | 11 49 19.73 | +78 21 23.1 | – | – | 557 |
| 1999-03-12 03:54:24 | C | 11 47 04.34 | +78 36 34.8 | 16.6 | z | 750 |
| 1999-03-12 04:04:52 | C | 11 46 56.28 | +78 37 20.1 | 16.7 | z | 750 |
| 1999-03-12 04:15:00 | C | 11 46 48.48 | +78 38 03.2 | 19.7 | z | 750 |
| 1999-03-12 20:32:17 | C | 11 33 37.45 | +79 47 00.0 | – | z | 057 |
| 1999-03-12 20:33:44 | C | 11 33 35.37 | +79 47 05.3 | – | z | 057 |
| 1999-03-12 20:37:52 | C | 11 33 32.13 | +79 47 24.5 | – | z | 057 |
| 1999-03-12 20:41:42 | C | 11 33 27.63 | +79 47 40.8 | – | z | 057 |
| 1999-03-12 20:44:13 | C | 11 33 25.29 | +79 47 53.2 | – | z | 057 |
| 1999-03-12 22:35:06 | C | 11 31 31.18 | +79 55 52.2 | – | – | 557 |
| 1999-03-12 23:46:48 | C | 11 30 14.22 | +80 01 01.9 | – | – | 557 |
| 1999-03-13 00:54:12 | C | 11 29 00.71 | +80 05 48.5 | – | – | 557 |
| 1999-03-13 02:10:20 | C | 11 27 36.79 | +80 11 07.5 | – | – | 557 |
| 1999-03-13 04:05:23 | C | 11 25 29.63 | +80 19 03.4 | – | – | 557 |
| 1999-03-16 04:18:14 | C | 08 16 19.23 | +84 46 40.9 | 16.8 | z | 750 |
| 1999-03-16 04:23:37 | C | 08 15 50.64 | +84 46 46.8 | 16.1 | z | 750 |
| 1999-03-16 04:39:00 | C | 08 14 28.03 | +84 47 04.1 | 15.6 | z | 750 |
| 1999-03-16 04:50:00 | C | 08 13 30.64 | +84 47 15.8 | 15.7 | z | 750 |
| 1999-03-16 04:57:12 | C | 08 12 52.46 | +84 47 23.4 | 15.4 | z | 750 |
| 1999-03-16 05:05:21 | C | 08 12 09.20 | +84 47 31.3 | 15.4 | z | 750 |
| 1999-03-22 03:22:57 | C | 02 21 40.56 | +66 28 33.0 | 16.9 | z | 750 |
| 1999-03-22 03:26:43 | C | 02 21 38.68 | +66 27 40.1 | 17.5 | z | 750 |
| 1999-03-22 03:36:38 | C | 02 21 33.86 | +66 25 26.0 | 17.3 | z | 750 |
| 1999-03-22 03:39:35 | C | 02 21 32.35 | +66 24 45.4 | 16.8 | z | 750 |
| 1999-03-22 03:42:20 | C | 02 21 31.08 | +66 24 07.2 | 16.9 | z | 750 |
| 1999-03-22 03:45:57 | C | 02 21 29.16 | +66 23 17.8 | 17.0 | z | 750 |
| 1999-03-24 18:25:35 | C | 01 58 56.07 | +50 47 09.4 | – | – | 118 |
| 1999-03-24 18:30:17 | C | 01 58 54.84 | +50 45 51.2 | – | – | 118 |
| 1999-03-24 18:35:28 | C | 01 58 53.54 | +50 44 24.2 | – | – | 118 |
| 1999-09-05 00:55:18 | C | 02 55 20.89 | +12 03 23.3 | – | c | 118 |
| 1999-09-05 00:59:04 | C | 02 55 20.69 | +12 03 26.1 | – | c | 118 |
| 1999-09-05 01:00:38 | C | 02 55 20.63 | +12 03 27.0 | – | c | 118 |
| 1999-09-14 10:24:01 | c | 02 42 11.68 | +14 43 28.3 | – | d | 703 |
| 1999-09-14 10:42:05 | c | 02 42 10.23 | +14 43 40.4 | – | d | 703 |
| 1999-09-14 11:00:04 | c | 02 42 08.81 | +14 43 53.1 | – | d | 703 |
| 1999-09-14 11:18:05 | c | 02 42 07.35 | +14 44 05.1 | – | d | 703 |
| 1999-09-24 01:39:43 | C | 02 21 05.18 | +17 11 03.5 | – | c | 118 |
| 1999-09-24 01:44:22 | C | 02 21 04.67 | +17 11 06.2 | – | c | 118 |
| 1999-10-01 10:19:49 | C | 02 00 27.32 | +18 41 40.4 | – | c | 699 |
| 1999-10-01 10:52:47 | C | 02 00 23.05 | +18 41 54.5 | – | c | 699 |
| 1999-10-01 11:25:48 | C | 02 00 18.82 | +18 42 08.1 | – | c | 699 |
| 1999-10-03 06:53:02 | C | 01 54 49.58 | +19 00 16.2 | 17.6 | a | 704 |
| 1999-10-03 07:09:09 | C | 01 54 47.43 | +19 00 23.1 | 17.5 | a | 704 |
| 1999-10-03 07:25:16 | C | 01 54 45.32 | +19 00 29.9 | 16.8 | a | 704 |
| Epoch (UTC) | Value | Sigma | Units | Freq (MHz) | Receiver | Transmitter |
|---|---|---|---|---|---|---|
| 1999-03-22 19:00:00 | 256120.928 | 2 | Hz | 8560 | -14 | -14 |
| 1999-03-22 19:10:00 | 255413.3 | 0.8 | Hz | 8560 | -14 | -14 |
| 1999-03-22 20:20:00 | 60196743 | 15 | us | 8560 | -14 | -14 |
| 1999-03-23 17:20:00 | 200657.153 | 2 | Hz | 8560 | -14 | -14 |
| 1999-03-23 18:00:00 | 58222201 | 13 | us | 8560 | -14 | -14 |
| 1999-03-23 19:40:00 | 189775.86 | 0.6 | Hz | 8560 | -14 | -14 |
| 1999-03-24 19:20:00 | 56606774 | 10 | us | 8560 | -14 | -14 |
| 1999-03-24 19:50:00 | 56581684 | 6 | us | 8560 | -14 | -14 |
| 1999-03-24 20:40:00 | 56541351.5 | 3 | us | 8560 | -14 | -14 |
| 1999-03-24 22:40:00 | 98798.44 | 0.6 | Hz | 8560 | -14 | -14 |
| 1999-03-25 18:20:00 | 55871151.77 | 0.35 | us | 8560 | -14 | -14 |
| 1999-03-25 18:30:00 | 49750.55 | 0.6 | Hz | 8560 | -14 | -14 |
| 1999-03-25 20:00:00 | 55839294.5 | 3 | us | 8560 | -14 | -14 |
| 1999-03-26 03:00:00 | 55794584.04 | 3 | us | 8560 | -14 | -14 |
| 1999-03-26 19:00:00 | 55883749.15 | 3 | us | 8560 | -14 | -14 |
| 1999-03-26 23:10:00 | 55968454.29 | 0.35 | us | 8560 | -14 | -14 |
| 1999-03-26 23:10:00 | -64518.617 | 2.5 | Hz | 8560 | -14 | -14 |