IAA Minor Planet Database| Epoch (TDB) | 2025-11-21 (JD 2461000.5) |
|---|---|
| Eccentricity (e) | 0.6542279075 ± 1.99e-07 |
| Semi-major axis (a) | 1.9258806662 AU ± 4.42e-09 |
| Inclination (i) | 9.55458398° ± 3.26e-05 |
| Long. of Asc. Node (Ω) | 23.94269674° ± 1.44e-05 |
| Arg. of Perihelion (ω) | 89.77132053° ± 4.04e-05 |
| Mean Anomaly (M) | 2.40507315° ± 5.65e-06 |
| Mean Motion (n) | 0.3687807270°/day ± 1.27e-09 |
| Perihelion dist (q) | 0.66591579 AU ± 3.83e-07 |
| Aphelion dist (Q) | 3.18584554 AU ± 3.83e-07 |
| Orbital Period | 2.67266213 yr ± 9.21e-09 |
| H (abs. magnitude) | 20.14 |
|---|---|
| G (slope) | 0.15 |
1999 HC
| Source | IAA |
|---|---|
| Solution Date | 2026-05-31 |
| RMS Residual | 0.500″ |
| Uncertainty | 0 |
| Orbit Type | Apollo |
| MOID | 0.025338 AU |
| Observations Used | 90 |
| Oppositions | 5 |
| Arc Total | 1991-2025 |
| First Observation Used | 1991-04-11 |
| Last Observation Used | 1999-04-25 |
| Date | Type | RA | Dec | Mag | Band | Observatory |
|---|---|---|---|---|---|---|
| 1991-04-11 14:39:59 | A | 13 49 18.08 | -02 30 05.6 | 15.5 | D | 400 |
| 1991-04-11 14:55:00 | A | 13 49 12.45 | -02 31 43.2 | – | D | 400 |
| 1991-04-11 15:04:00 | A | 13 49 09.20 | -02 32 36.0 | – | D | 400 |
| 1991-04-12 10:25:30 | A | 13 42 45.69 | -04 23 22.4 | 15.0 | – | 675 |
| 1991-04-12 10:59:14 | A | 13 42 35.07 | -04 26 16.4 | – | – | 675 |
| 1991-04-13 09:04:59 | A | 13 36 44.55 | -06 08 37.1 | – | – | 675 |
| 1991-04-14 08:46:14 | – | 13 31 36.14 | -07 37 21.4 | 15.2 | – | 675 |
| 1991-04-14 09:31:14 | – | 13 31 26.34 | -07 39 52.1 | – | – | 675 |
| 1991-04-18 10:03:10 | A | 13 18 05.00 | -11 26 59.8 | – | – | 413 |
| 1991-04-19 02:04:00 | A | 13 16 34.04 | -11 53 26.2 | – | – | 801 |
| 1991-04-19 02:07:48 | A | 13 16 33.66 | -11 53 32.3 | – | – | 801 |
| 1991-04-19 06:09:08 | A | 13 16 09.59 | -11 59 31.4 | – | – | 801 |
| 1991-04-19 06:13:33 | A | 13 16 09.12 | -11 59 36.7 | – | – | 801 |
| 1991-04-19 07:57:59 | A | 13 16 00.87 | -12 02 04.9 | 16.2 | – | 675 |
| 1991-04-19 08:38:44 | A | 13 15 56.99 | -12 03 02.9 | – | – | 675 |
| 1991-04-20 17:19:40 | A | 13 13 23.91 | -12 45 03.6 | – | – | 413 |
| 1999-05-07 03:48:51 | C | 12 31 25.76 | -12 03 09.8 | – | z | 711 |
| 1999-05-07 06:35:55 | C | 12 31 33.54 | -12 05 05.4 | – | z | 711 |
| 1999-05-07 06:48:47 | C | 12 31 34.15 | -12 05 14.2 | – | z | 711 |
| 2007-04-14 04:14:38 | C | 07 05 50.86 | +32 55 29.9 | – | o | 291 |
| 2007-04-14 04:21:04 | C | 07 05 56.00 | +32 55 09.8 | – | o | 291 |
| 2007-04-14 04:29:22 | C | 07 06 02.64 | +32 54 43.9 | – | o | 291 |
| 2007-04-17 04:07:54 | C | 08 02 20.47 | +28 22 51.7 | 18.8 | c | 704 |
| 2007-04-17 04:21:06 | C | 08 02 30.11 | +28 21 53.4 | 18.9 | c | 704 |
| 2007-04-17 04:34:14 | C | 08 02 39.75 | +28 20 55.7 | 19.0 | c | 704 |
| 2007-04-17 04:47:54 | C | 08 02 49.78 | +28 19 56.0 | 19.5 | c | 704 |
| 2007-04-17 05:01:07 | C | 08 02 59.52 | +28 18 56.1 | 19.4 | c | 704 |
| 2007-04-20 03:42:09 | C | 08 51 16.63 | +22 49 36.9 | – | o | 693 |
| 2007-04-20 03:42:52 | C | 08 51 17.04 | +22 49 33.6 | – | o | 693 |
| 2007-04-20 03:43:32 | C | 08 51 17.47 | +22 49 30.2 | – | o | 693 |
| 2007-04-20 04:13:41 | C | 08 51 35.72 | +22 47 03.0 | 18.9 | c | 704 |
| 2007-04-20 04:26:30 | C | 08 51 43.50 | +22 46 00.5 | 19.8 | c | 704 |
| 2007-04-20 04:39:19 | C | 08 51 51.38 | +22 44 57.9 | 19.8 | c | 704 |
| 2007-04-20 04:52:07 | C | 08 51 59.10 | +22 43 53.8 | 19.8 | c | 704 |
| 2007-04-20 05:04:55 | C | 08 52 06.90 | +22 42 55.1 | 19.8 | c | 704 |
| 2007-04-21 19:45:52 | C | 09 14 43.36 | +19 37 55.0 | – | o | 198 |
| 2007-04-21 19:49:46 | C | 09 14 45.47 | +19 37 37.0 | – | o | 198 |
| 2007-04-21 19:52:06 | C | 09 14 46.72 | +19 37 26.0 | – | o | 198 |
| 2007-04-21 19:53:39 | C | 09 14 47.57 | +19 37 18.7 | – | o | 198 |
| 2007-04-21 19:57:32 | C | 09 14 49.66 | +19 37 01.0 | – | o | 198 |
| 2009-08-17 10:26:11 | C | 03 54 39.36 | +16 53 30.6 | – | o | 291 |
| 2009-08-17 10:32:38 | C | 03 54 40.52 | +16 53 35.4 | – | o | 291 |
| 2009-08-17 10:38:14 | C | 03 54 41.48 | +16 53 39.8 | – | o | 291 |
| 2015-05-02 05:14:40 | C | 09 15 19.06 | +16 33 14.4 | – | o | 926 |
| 2015-05-02 05:19:31 | C | 09 15 20.89 | +16 32 59.9 | – | o | 926 |
| 2015-05-02 05:24:21 | C | 09 15 22.72 | +16 32 45.7 | – | o | 926 |
| 2015-05-03 05:29:27 | C | 09 24 18.88 | +15 22 49.8 | – | o | 926 |
| 2015-05-03 05:34:16 | C | 09 24 20.59 | +15 22 35.6 | – | o | 926 |
| 2015-05-03 05:39:07 | C | 09 24 22.34 | +15 22 22.0 | – | o | 926 |
| 2023-06-10 04:33:05 | C | 11 51 13.23 | -05 17 20.5 | – | o | 291 |