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 |
|---|---|---|---|---|---|---|
| 1999-01-22 23:21:33 | C | 12 12 04.56 | +47 15 57.6 | – | – | 561 |
| 1999-01-22 23:24:10 | C | 12 12 04.73 | +47 15 59.8 | – | – | 561 |
| 1999-01-25 11:51:19 | C | 12 16 09.20 | +48 04 17.9 | – | z | 711 |
| 1999-01-25 11:59:11 | C | 12 16 09.66 | +48 04 24.3 | – | z | 711 |
| 1999-01-26 19:18:59 | C | 12 18 13.39 | +48 30 21.0 | – | – | 360 |
| 1999-01-26 19:22:45 | C | 12 18 13.59 | +48 30 24.1 | – | – | 360 |
| 1999-01-26 19:26:15 | C | 12 18 13.79 | +48 30 27.1 | – | – | 360 |
| 1999-02-09 10:24:36 | C | 12 36 13.21 | +53 48 17.1 | 18.3 | a | 704 |
| 1999-02-09 10:54:39 | C | 12 36 14.17 | +53 48 51.3 | – | a | 704 |
| 1999-02-09 11:24:48 | C | 12 36 14.99 | +53 49 23.7 | – | a | 704 |
| 1999-02-09 11:54:43 | C | 12 36 15.99 | +53 49 57.8 | – | a | 704 |
| 1999-02-09 12:24:41 | C | 12 36 16.87 | +53 50 29.9 | – | a | 704 |
| 1999-02-09 20:37:28 | C | 12 36 41.46 | +53 59 27.4 | – | – | 557 |
| 1999-02-09 21:25:12 | C | 12 36 43.38 | +54 00 24.8 | – | – | 557 |
| 1999-02-09 22:14:25 | C | 12 36 45.28 | +54 01 23.6 | – | – | 557 |
| 1999-02-12 21:50:45 | C | 12 39 31.23 | +55 25 38.3 | – | z | 587 |
| 1999-02-12 21:58:38 | C | 12 39 31.56 | +55 25 48.1 | – | z | 587 |
| 1999-02-12 22:04:34 | C | 12 39 31.67 | +55 25 55.7 | – | z | 587 |
| 1999-02-15 19:53:43 | C | 12 41 41.51 | +56 54 02.6 | – | z | 151 |
| 1999-02-15 20:02:36 | C | 12 41 41.62 | +56 54 14.0 | – | z | 151 |
| 1999-02-17 00:31:19 | C | 12 42 22.02 | +57 32 35.8 | – | z | 071 |
| 1999-02-17 00:34:49 | C | 12 42 22.07 | +57 32 40.9 | – | z | 071 |
| 1999-02-17 00:37:34 | C | 12 42 21.96 | +57 32 44.7 | – | z | 071 |
| 1999-02-17 23:08:11 | C | 12 42 52.17 | +58 03 34.8 | – | z | 071 |
| 1999-02-17 23:10:24 | C | 12 42 52.21 | +58 03 37.9 | – | z | 071 |
| 1999-02-17 23:13:06 | C | 12 42 52.24 | +58 03 41.7 | – | z | 071 |
| 1999-02-18 06:47:29 | C | 12 43 01.06 | +58 14 13.5 | 16.5 | z | 750 |
| 1999-02-18 06:57:57 | C | 12 43 01.15 | +58 14 28.8 | 16.6 | z | 750 |
| 1999-02-18 07:14:49 | C | 12 43 01.25 | +58 14 53.1 | 16.2 | z | 750 |
| 1999-02-19 06:12:46 | C | 12 43 25.60 | +58 47 29.3 | 16.3 | z | 750 |
| 1999-02-19 06:30:18 | C | 12 43 25.57 | +58 47 55.3 | 16.1 | z | 750 |
| 1999-02-19 06:57:32 | C | 12 43 25.62 | +58 48 36.1 | 16.5 | z | 750 |
| 1999-02-19 10:08:10 | C | 12 43 26.26 | +58 53 23.3 | – | z | 711 |
| 1999-02-19 10:12:28 | C | 12 43 26.23 | +58 53 29.5 | – | z | 711 |
| 1999-02-26 20:54:04 | C | 12 43 07.21 | +63 46 32.7 | – | z | 151 |
| 1999-02-26 20:58:58 | C | 12 43 07.00 | +63 46 42.3 | – | z | 151 |
| 1999-02-26 21:03:41 | C | 12 43 06.92 | +63 46 51.7 | – | z | 151 |
| 1999-02-28 21:38:20 | C | 12 41 34.71 | +65 22 45.1 | – | z | 151 |
| 1999-02-28 21:42:51 | C | 12 41 34.36 | +65 22 55.3 | – | z | 151 |
| 1999-02-28 21:48:28 | C | 12 41 33.98 | +65 23 07.1 | – | z | 151 |
| 1999-03-09 19:13:05 | C | 12 13 59.60 | +74 57 46.6 | – | z | 057 |
| 1999-03-09 19:15:00 | C | 12 13 58.69 | +74 57 54.2 | – | z | 057 |
| 1999-03-09 19:18:14 | C | 12 13 57.57 | +74 58 06.8 | – | z | 057 |
| 1999-03-09 19:19:46 | C | 12 13 56.97 | +74 58 10.4 | – | z | 057 |
| 1999-03-09 19:23:18 | C | 12 13 56.11 | +74 58 24.0 | – | z | 057 |
| 1999-03-09 19:25:01 | C | 12 13 55.55 | +74 58 31.0 | – | z | 057 |
| 1999-03-09 19:29:23 | C | 12 13 54.57 | +74 58 48.0 | – | z | 057 |
| 1999-03-09 19:32:37 | C | 12 13 53.27 | +74 58 59.7 | – | z | 057 |
| 1999-03-09 19:36:14 | C | 12 13 51.94 | +74 59 13.7 | – | z | 057 |
| 1999-03-09 19:37:37 | C | 12 13 51.76 | +74 59 19.4 | – | z | 057 |
| 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 |