IAA Minor Planet Database| Epoch (TDB) | 2025-11-21 (JD 2461000.5) |
|---|---|
| Eccentricity (e) | 0.7138620135 ± 1.49e-08 |
| Semi-major axis (a) | 2.7430809123 AU ± 1.67e-08 |
| Inclination (i) | 2.42591843° ± 2.63e-06 |
| Long. of Asc. Node (Ω) | 6.07706071° ± 2.56e-05 |
| Arg. of Perihelion (ω) | 268.71719953° ± 2.65e-05 |
| Mean Anomaly (M) | 26.60077850° ± 1.56e-07 |
| Mean Motion (n) | 0.2169473497°/day ± 1.98e-09 |
| Perihelion dist (q) | 0.78489965 AU ± 4.11e-08 |
| Aphelion dist (Q) | 4.70126218 AU ± 4.99e-08 |
| Orbital Period | 4.54315890 yr ± 4.15e-08 |
| NGA Model | r2 |
| A2 | -5.75894754e-13 ± 2.37e-14 AU/d² |
| H (abs. magnitude) | 20.88 |
|---|---|
| G (slope) | 0.15 |
2016 EC156
| Source | IAA |
|---|---|
| Solution Date | 2026-05-31 |
| RMS Residual | 0.197″ |
| Uncertainty | 0 |
| Orbit Type | Apollo |
| MOID | 0.019237 AU |
| Observations Used | 341 |
| Radar Obs Used | 1 |
| Oppositions | 21 |
| Arc Total | 1998-2025 |
| First Observation Used | 1998-09-17 |
| Last Observation Used | 2025-10-25 |
| Date | Type | RA | Dec | Mag | Band | Observatory |
|---|---|---|---|---|---|---|
| 1998-09-17 10:39:38 | c | 01 06 22.71 | +03 05 15.8 | – | i | 691 |
| 1998-09-17 11:10:06 | c | 01 06 17.16 | +03 05 06.6 | – | i | 691 |
| 1998-09-17 11:46:15 | c | 01 06 10.67 | +03 04 55.5 | – | i | 691 |
| 1998-09-18 07:39:04 | c | 01 02 52.36 | +02 59 03.7 | – | i | 691 |
| 1998-09-18 07:44:53 | c | 01 02 51.37 | +02 59 01.9 | – | i | 691 |
| 1998-09-18 07:50:42 | c | 01 02 50.36 | +02 59 00.2 | – | i | 691 |
| 1998-09-18 09:06:01 | C | 01 02 37.22 | +02 58 37.2 | 19.2 | a | 704 |
| 1998-09-18 09:24:43 | C | 01 02 33.87 | +02 58 32.5 | 19.9 | a | 704 |
| 1998-09-18 10:03:44 | C | 01 02 27.19 | +02 58 21.0 | 19.3 | a | 704 |
| 1998-09-18 10:22:53 | C | 01 02 23.88 | +02 58 14.9 | 19.7 | a | 704 |
| 1998-09-18 11:27:12 | c | 01 02 13.29 | +02 57 57.3 | – | i | 691 |
| 1998-09-18 11:33:04 | c | 01 02 12.31 | +02 57 55.7 | – | i | 691 |
| 1998-09-18 11:38:56 | c | 01 02 11.33 | +02 57 53.8 | – | i | 691 |
| 1998-09-18 12:57:12 | C | 01 02 01.36 | +02 58 11.7 | – | – | 422 |
| 1998-09-18 12:58:51 | C | 01 02 01.03 | +02 58 10.4 | – | – | 422 |
| 1998-09-19 08:10:35 | c | 00 58 59.50 | +02 52 06.7 | – | i | 691 |
| 1998-09-19 08:16:06 | c | 00 58 58.61 | +02 52 05.3 | – | i | 691 |
| 1998-09-19 08:22:10 | c | 00 58 57.65 | +02 52 03.6 | – | i | 691 |
| 1998-09-19 09:06:03 | C | 00 58 50.27 | +02 51 52.3 | – | – | 711 |
| 1998-09-19 09:19:30 | C | 00 58 48.15 | +02 51 49.1 | – | – | 711 |
| 1998-09-19 09:30:11 | C | 00 58 46.44 | +02 51 45.8 | – | – | 711 |
| 1998-09-19 12:19:41 | C | 00 58 22.84 | +02 51 36.1 | – | – | 422 |
| 1998-09-19 12:27:00 | C | 00 58 21.66 | +02 51 33.3 | – | – | 422 |
| 1998-09-19 12:28:23 | C | 00 58 21.40 | +02 51 32.9 | – | – | 422 |
| 1998-09-19 13:54:06 | C | 00 58 08.30 | +02 50 30.1 | – | z | 402 |
| 1998-09-19 14:03:51 | C | 00 58 06.80 | +02 50 28.0 | – | z | 402 |
| 1998-09-19 14:06:19 | C | 00 58 06.29 | +02 50 27.7 | – | z | 402 |
| 1998-09-19 14:33:26 | C | 00 58 02.02 | +02 50 58.7 | – | b | 426 |
| 1998-09-19 14:42:48 | C | 00 58 00.60 | +02 50 56.2 | – | b | 426 |
| 1998-09-19 14:52:49 | C | 00 57 59.08 | +02 50 52.9 | – | b | 426 |
| 1998-09-20 02:10:33 | C | 00 56 17.47 | +02 47 05.1 | – | – | 557 |
| 1998-09-20 02:13:55 | C | 00 56 17.03 | +02 47 04.4 | – | – | 557 |
| 1998-09-20 02:17:15 | C | 00 56 16.51 | +02 47 03.3 | – | – | 557 |
| 1998-09-24 15:45:05 | C | 00 42 27.62 | +02 21 39.0 | – | b | 426 |
| 1998-09-24 16:04:28 | C | 00 42 25.40 | +02 21 34.7 | – | b | 426 |
| 1998-09-24 16:23:26 | C | 00 42 23.18 | +02 21 30.5 | – | b | 426 |
| 1998-09-25 00:57:11 | C | 00 41 27.75 | +02 19 05.8 | – | – | 046 |
| 1998-09-25 00:59:55 | C | 00 41 27.48 | +02 19 05.5 | – | – | 046 |
| 1998-09-25 01:03:00 | C | 00 41 27.10 | +02 19 04.6 | – | – | 046 |
| 1998-09-26 05:08:10 | C | 00 38 35.04 | +02 13 34.7 | 19.4 | a | 704 |
| 1998-09-26 05:32:15 | C | 00 38 32.36 | +02 13 26.7 | 19.9 | a | 704 |
| 1998-09-26 05:56:15 | C | 00 38 29.89 | +02 13 24.0 | 20.1 | a | 704 |
| 1998-09-26 06:20:14 | C | 00 38 27.36 | +02 13 17.7 | 20.1 | a | 704 |
| 1998-09-27 07:09:46 | C | 00 36 04.27 | +02 08 41.4 | 19.2 | a | 704 |
| 1998-09-27 07:35:34 | C | 00 36 01.59 | +02 08 37.4 | 19.5 | a | 704 |
| 1998-09-27 08:00:53 | C | 00 35 59.14 | +02 08 33.4 | – | a | 704 |
| 1998-09-27 08:25:58 | C | 00 35 56.58 | +02 08 29.5 | – | a | 704 |
| 1998-09-27 08:51:44 | C | 00 35 53.91 | +02 08 22.5 | – | a | 704 |
| 2016-02-29 11:04:29 | C | 11 41 42.51 | +04 02 45.3 | – | t | F51 |
| 2016-02-29 11:20:43 | C | 11 41 41.67 | +04 02 49.6 | – | t | F51 |
| Epoch (UTC) | Value | Sigma | Units | Freq (MHz) | Receiver | Transmitter |
|---|---|---|---|---|---|---|
| 2025-09-02 09:50:00 | 35184874.99 | 3 | us | 8560 | -14 | -14 |