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
2011-04-29 09:50:37 C 18 26 21.38 +29 24 52.6 o H21
2011-06-16 02:47:03 C 15 32 14.72 +29 26 28.0 o H21
2011-06-16 03:00:15 C 15 32 11.69 +29 26 07.5 o H21
2011-06-16 03:06:49 C 15 32 10.24 +29 25 56.7 o H21
2011-06-16 03:12:58 C 15 32 08.81 +29 25 47.0 o H21
2011-06-25 04:34:18 C 14 46 45.90 +22 20 55.1 o 291
2011-06-25 04:40:25 C 14 46 44.63 +22 20 41.5 o 291
2011-06-25 04:46:49 C 14 46 43.49 +22 20 27.0 o 291
2012-05-02 10:56:32 C 20 17 00.36 +06 31 34.0 o 291
2012-05-02 11:00:50 C 20 17 00.74 +06 31 34.5 o 291
2012-05-02 11:06:45 C 20 17 01.25 +06 31 35.0 o 291
2012-05-20 10:02:33 C 21 04 43.60 +06 40 40.0 o 291
2012-05-20 10:03:36 C 21 04 43.71 +06 40 40.0 o 291
2012-05-20 10:04:39 C 21 04 43.87 +06 40 39.9 o 291
2012-06-15 10:40:04 C 00 34 11.96 -01 13 54.3 o 291
2012-06-15 10:40:53 C 00 34 12.52 -01 13 55.9 o 291
2012-06-15 10:41:40 C 00 34 13.12 -01 13 58.4 o 291
2017-04-22 08:44:58 C 16 22 46.46 +70 27 16.1 o 291
2017-04-22 08:52:03 C 16 22 43.84 +70 27 14.9 o 291
2017-04-22 08:59:07 C 16 22 41.22 +70 27 14.0 o 291
2017-05-02 04:25:47 C 15 05 25.83 +68 11 56.6 o 291
2017-05-02 04:32:45 C 15 05 23.78 +68 11 50.7 o 291
2017-05-29 02:28:25 C 13 25 48.37 +51 54 24.3 u H21
2017-05-29 02:52:17 C 13 25 46.98 +51 53 42.4 u H21
2017-05-29 03:19:51 C 13 25 45.39 +51 52 54.2 u H21
2017-05-30 06:47:13 C 13 24 15.288 +51 03 31.49 L F51
2017-05-30 07:08:17 C 13 24 14.088 +51 02 53.79 L F51
2017-05-30 07:29:22 C 13 24 12.892 +51 02 15.77 L F51
2017-06-02 02:55:06 C 13 21 05.09 +49 00 16.5 u H21
2017-06-02 03:18:57 C 13 21 04.06 +48 59 33.0 u H21
2017-06-02 03:43:50 C 13 21 02.95 +48 58 47.1 u H21
2018-05-31 09:05:31 C 15 46 11.832 +40 44 55.65 U F51
2018-05-31 09:23:01 C 15 46 08.468 +40 44 39.91 U F51
2018-05-31 09:58:12 C 15 46 01.713 +40 44 08.09 U F51
2018-06-10 06:36:31 C 15 04 49.412 +35 54 30.88 U F51
2018-06-10 06:53:03 C 15 04 46.731 +35 54 06.29 U F51
2018-06-10 07:09:31 C 15 04 44.064 +35 53 41.49 U F51
2019-06-08 23:33:01 C 19 16 14.39 +22 13 42.9 q 157
2019-06-08 23:39:04 C 19 16 13.69 +22 13 46.0 q 157
2019-06-08 23:44:25 C 19 16 13.07 +22 13 48.9 q 157
2019-06-13 10:56:34 C 19 00 54.74 +23 10 15.0 V T05
2019-06-13 11:01:11 C 19 00 53.82 +23 10 16.8 V T05
2019-06-13 11:09:40 C 19 00 52.15 +23 10 21.7 V T05
2019-06-13 14:35:51 C 19 00 10.59 +23 12 08.3 V T05
2019-06-15 10:57:11 C 18 50 34.68 +23 35 39.9 V T08
2019-06-15 11:05:45 C 18 50 32.46 +23 35 44.5 V T08
2019-06-15 11:32:45 C 18 50 25.38 +23 35 58.9 V T08
2019-06-15 12:33:42 C 18 50 09.29 +23 36 30.4 V T08
2019-06-15 12:52:49 C 18 50 04.22 +23 36 39.7 V T08
2019-06-15 13:14:21 C 18 49 58.58 +23 36 50.4 V T08
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)