IAA RAS IAA Minor Planet Database

164211 (2004 JA27)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4232887651 ± 1.05e-08
Semi-major axis (a)1.6663096345 AU ± 9.45e-10
Inclination (i)2.25792174° ± 2.63e-06
Long. of Asc. Node (Ω)67.75991093° ± 4.12e-05
Arg. of Perihelion (ω)270.19800377° ± 4.19e-05
Mean Anomaly (M)312.23704406° ± 3.10e-06
Mean Motion (n)0.4582249348°/day ± 3.90e-10
Perihelion dist (q)0.96097949 AU ± 1.75e-08
Aphelion dist (Q)2.37163978 AU ± 1.75e-08
Orbital Period2.15096606 yr ± 1.83e-09
Physical Parameters
H (abs. magnitude)19.50
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.402″
Uncertainty0
Orbit TypeApollo
MOID0.032518 AU
Observations Used454
Radar Obs Used1
Oppositions1
Arc Total2004-2025
First Observation Used2004-05-15
Last Observation Used2025-03-01
Observations (486)
Date Type RA Dec Mag Band Observatory
2004-05-15 07:13:47 C 16 26 39.77 -20 33 07.9 19.8 c 704
2004-05-15 07:41:50 C 16 26 38.38 -20 33 09.3 19.4 c 704
2004-05-15 08:09:26 C 16 26 37.03 -20 33 09.3 20.0 c 704
2004-05-16 08:30:08 C 16 25 30.30 -20 33 53.3 19.2 c 704
2004-05-16 08:44:06 C 16 25 29.58 -20 33 53.2 19.7 c 704
2004-05-16 08:58:04 C 16 25 28.87 -20 33 53.7 19.7 c 704
2004-05-16 09:12:02 C 16 25 28.12 -20 33 54.6 19.5 c 704
2004-05-16 09:26:00 C 16 25 27.45 -20 33 54.9 19.6 c 704
2004-05-19 07:22:50 C 16 21 54.83 -20 35 48.1 19.5 c 704
2004-05-19 07:35:45 C 16 21 54.12 -20 35 47.9 19.8 c 704
2004-05-19 08:01:52 C 16 21 52.53 -20 35 49.2 19.6 c 704
2004-05-19 08:14:55 C 16 21 51.75 -20 35 49.2 20.1 c 704
2004-05-21 07:50:13 C 16 19 08.81 -20 36 59.1 18.7 c 704
2004-05-21 08:03:27 C 16 19 07.92 -20 36 58.6 19.0 c 704
2004-05-21 08:16:49 C 16 19 07.05 -20 36 59.3 19.4 c 704
2004-05-21 08:43:24 C 16 19 05.38 -20 36 59.1 19.1 c 704
2004-05-22 00:13:20 C 16 18 09.33 -20 37 23.8 – r 621
2004-05-22 00:16:56 C 16 18 09.10 -20 37 24.0 – r 621
2004-05-22 00:20:33 C 16 18 08.88 -20 37 24.4 – r 621
2004-05-22 00:24:12 C 16 18 08.64 -20 37 24.3 – r 621
2004-05-22 06:59:06 C 16 17 44.50 -20 37 30.1 19.1 c 704
2004-05-22 07:08:38 C 16 17 43.95 -20 37 29.8 19.0 c 704
2004-05-22 07:08:50 C 16 17 43.91 -20 37 30.7 18.6 c 704
2004-05-22 07:11:35 C 16 17 43.70 -20 37 29.9 19.4 c 704
2004-05-22 07:22:04 C 16 17 43.05 -20 37 29.9 19.0 c 704
2004-05-22 07:22:16 C 16 17 43.04 -20 37 30.3 19.1 c 704
2004-05-22 07:24:12 C 16 17 42.86 -20 37 30.4 19.2 c 704
2004-05-22 07:35:22 C 16 17 42.12 -20 37 30.5 18.8 c 704
2004-05-22 07:35:34 C 16 17 42.09 -20 37 29.7 18.7 c 704
2004-05-22 07:38:10 C 16 17 41.90 -20 37 30.6 19.2 c 704
2004-05-22 07:48:37 C 16 17 41.25 -20 37 30.5 19.3 c 704
2004-05-22 07:48:49 C 16 17 41.28 -20 37 30.3 19.4 c 704
2004-05-23 00:05:43 C 16 16 39.89 -20 37 55.1 – r J95
2004-05-23 00:22:45 C 16 16 38.76 -20 37 55.0 – r J95
2004-05-23 02:29:36 C 16 16 30.04 -20 37 54.5 – r J75
2004-05-23 02:35:13 C 16 16 30.53 -20 37 37.3 – r 859
2004-05-23 02:36:40 C 16 16 30.39 -20 37 37.3 – r 859
2004-05-23 02:40:48 C 16 16 29.32 -20 37 55.2 – r J75
2004-05-23 02:42:42 C 16 16 29.95 -20 37 37.3 – r 859
2004-05-23 02:46:31 C 16 16 29.66 -20 37 37.0 – r 859
2004-05-23 02:48:21 C 16 16 28.75 -20 37 55.0 – r J75
2004-05-23 08:08:41 C 16 16 08.57 -20 38 01.4 – r 448
2004-05-23 08:18:49 C 16 16 07.83 -20 38 01.8 – r 448
2004-05-23 08:28:20 C 16 16 07.21 -20 38 01.9 – r 448
2004-05-23 22:47:07 C 16 15 11.57 -20 38 22.9 – c 587
2004-05-23 22:52:59 C 16 15 11.25 -20 38 21.1 – c 587
2004-05-23 23:03:33 C 16 15 10.46 -20 38 22.9 – c 587
2004-05-23 23:36:56 C 16 15 08.00 -20 38 27.7 – r A16
2004-05-23 23:39:59 C 16 15 07.91 -20 38 23.4 – r A16
2004-05-23 23:42:35 C 16 15 07.82 -20 38 23.0 – r A16
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2004-10-05 09:21:00 -78944 0.5 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)