494999 (2010 JU39)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5460130311 ± 5.31e-08
Semi-major axis (a)0.9191389477 AU ± 2.12e-09
Inclination (i)36.21578089° ± 5.97e-06
Long. of Asc. Node (Ω)95.15950408° ± 1.27e-06
Arg. of Perihelion (ω)311.38089500° ± 2.43e-06
Mean Anomaly (M)21.50944187° ± 1.20e-05
Mean Motion (n)1.1185116765°/day ± 3.88e-09
Perihelion dist (q)0.41727710 AU ± 4.88e-08
Aphelion dist (Q)1.42100079 AU ± 4.89e-08
Orbital Period0.88119445 yr ± 3.05e-09
Physical Parameters
H (abs. magnitude)19.68
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.249″
Uncertainty0
Orbit TypeAten
MOID0.005666 AU
Observations Used180
Radar Obs Used3
Oppositions2
Arc Total2003-2025
First Observation Used2003-06-07
Last Observation Used2025-06-17
Observations (191)
Date Type RA Dec Mag Band Observatory
2003-06-07 07:36:42 C 14 51 11.524 +39 27 57.36 645
2003-06-07 07:36:42 C 14 51 11.53 +39 27 57.3 n 645
2003-06-07 07:37:54 C 14 51 11.355 +39 27 55.50 645
2003-06-07 07:37:54 C 14 51 11.36 +39 27 55.6 n 645
2003-06-07 07:41:29 C 14 51 10.860 +39 27 50.61 645
2003-06-07 07:41:29 C 14 51 10.86 +39 27 50.7 n 645
2010-05-09 08:09:34 C 15 50 15.18 +56 43 18.0 r G96
2010-05-09 08:19:45 C 15 50 12.94 +56 43 13.4 r G96
2010-05-09 08:30:04 C 15 50 10.68 +56 43 08.6 r G96
2010-05-09 08:40:23 C 15 50 08.37 +56 43 03.6 r G96
2010-05-09 09:07:18 C 15 50 02.42 +56 42 50.5 o H01
2010-05-09 09:20:09 C 15 49 59.60 +56 42 44.4 o H01
2010-05-09 09:34:19 C 15 49 56.49 +56 42 37.5 o H01
2010-05-09 09:40:16 C 15 49 55.30 +56 42 35.2 r G96
2010-05-09 09:48:09 C 15 49 53.46 +56 42 30.8 o H01
2010-05-09 09:53:49 C 15 49 52.24 +56 42 28.6 r G96
2010-05-09 10:07:30 C 15 49 49.22 +56 42 21.9 r G96
2010-05-09 10:21:00 C 15 49 46.30 +56 42 15.4 r G96
2010-05-10 03:53:28 C 15 46 02.60 +56 33 34.4 o H01
2010-05-10 04:03:34 C 15 46 00.42 +56 33 29.5 o H01
2010-05-10 04:17:23 C 15 45 57.43 +56 33 23.0 o H01
2010-05-10 04:27:42 C 15 45 55.18 +56 33 17.7 o H01
2010-05-10 08:57:10 C 15 44 56.46 +56 30 59.6 c 926
2010-05-10 09:04:45 C 15 44 54.81 +56 30 54.6 c 926
2010-05-11 04:31:47 C 15 40 48.38 +56 20 02.6 o H01
2010-05-11 04:42:04 C 15 40 46.13 +56 19 56.5 o H01
2010-05-11 04:54:14 C 15 40 43.49 +56 19 49.7 o H01
2010-05-11 05:12:01 C 15 40 39.62 +56 19 39.6 o H01
2010-05-15 08:45:31 C 15 20 12.89 +55 08 05.4 o H01
2010-05-15 08:58:51 C 15 20 10.18 +55 07 53.8 o H01
2010-05-15 09:12:10 C 15 20 07.50 +55 07 42.3 o H01
2010-05-15 09:23:04 C 15 20 05.29 +55 07 32.8 o H01
2010-05-16 11:02:41 C 15 15 03.83 +54 44 50.4 o H01
2010-05-16 11:14:31 C 15 15 01.52 +54 44 39.3 o H01
2010-05-22 06:54:38 C 14 49 59.67 +52 14 19.8 o H01
2010-05-22 07:13:35 C 14 49 56.49 +52 13 56.2 o H01
2010-05-22 07:25:20 C 14 49 54.50 +52 13 41.7 o H01
2010-05-22 07:38:23 C 14 49 52.34 +52 13 25.7 o H01
2010-06-07 03:04:37 C 14 03 37.80 +42 40 32.6 o H21
2010-06-07 03:24:00 C 14 03 36.07 +42 39 58.7 o H21
2010-06-07 03:44:34 C 14 03 34.36 +42 39 24.0 o H21
2010-06-23 05:26:32 C 13 43 34.82 +31 18 16.0 o 291
2010-06-23 05:32:47 C 13 43 34.67 +31 18 06.2 o 291
2010-06-23 05:39:13 C 13 43 34.56 +31 17 55.6 o 291
2011-04-15 11:17:21 C 18 33 17.56 +25 29 19.0 r F65
2011-04-15 11:20:59 C 18 33 17.50 +25 29 21.5 r F65
2011-04-15 11:24:45 C 18 33 17.55 +25 29 23.9 r F65
2011-04-29 08:42:15 C 18 26 24.41 +29 24 03.9 o H21
2011-04-29 09:00:04 C 18 26 23.62 +29 24 16.4 o H21
2011-04-29 09:16:53 C 18 26 22.87 +29 24 28.6 o H21
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2019-06-27 00:48:00 111793.9091 0.2 Hz 2380 -1 -1
2019-06-27 01:06:00 63338006.54 4 us 2380 -1 -1
2019-06-28 00:25:00 60569617.51 0.35 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)