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
2019-06-25 09:22:09 C 16 14 44.96 +22 04 01.6 V T05
2019-06-25 09:58:30 C 16 13 50.97 +22 01 33.6 V T05
2019-06-25 10:12:50 C 16 13 29.64 +22 00 34.6 V T05
2019-06-25 10:17:18 C 16 13 22.99 +22 00 16.1 V T05
2019-06-26 22:09:02 C 15 14 54.46 +18 33 16.3 q C23
2019-06-26 22:17:17 C 15 14 39.56 +18 32 13.3 q C23
2019-06-26 22:25:30 C 15 14 24.59 +18 31 10.3 q C23
2019-06-26 22:31:16 C 15 14 14.17 +18 30 26.2 q C23
2019-06-26 22:36:37 C 15 14 04.43 +18 29 44.9 q C23
2019-06-27 21:57:47 n 14 30 44.13 +15 03 35.7 V Z43
2019-06-27 22:13:11 n 14 30 14.46 +15 01 01.5 V Z43
2019-06-28 01:11:23 S 14 24 39.240 +14 32 22.31 L C51
2019-06-28 02:44:43 S 14 21 41.141 +14 16 31.01 L C51
2019-06-28 21:11:34 C 13 46 35.27 +10 53 17.1 q 160
2019-06-28 21:14:30 C 13 46 29.71 +10 52 43.6 q 160
2019-06-28 21:17:26 C 13 46 24.15 +10 52 10.2 q 160
2019-06-30 08:24:12 C 12 44 28.68 +04 10 33.6 V T08
2019-06-30 08:29:34 C 12 44 19.88 +04 09 34.3 V T08
2019-06-30 08:37:34 C 12 44 06.82 +04 08 06.0 V T08
2019-07-01 03:55:58 C 12 14 50.20 +00 45 14.6 V 654
2019-07-01 04:07:46 C 12 14 33.14 +00 43 18.2 V 654
2019-07-01 04:24:30 C 12 14 09.00 +00 40 33.3 V 654
2024-05-27 04:36:45 C 12 17 55.511 +55 45 36.72 V G96
2024-05-27 04:45:00 C 12 17 55.720 +55 45 21.24 V G96
2024-05-27 04:53:15 C 12 17 55.957 +55 45 04.72 V G96
2024-05-27 05:01:31 C 12 17 56.227 +55 44 49.74 V G96
2025-04-29 09:38:35 C 17 03 56.444 +51 48 21.35 V G96
2025-04-29 09:46:44 C 17 03 55.012 +51 48 25.13 V G96
2025-04-29 09:55:15 C 17 03 53.564 +51 48 28.04 V G96
2025-04-29 10:03:26 C 17 03 52.182 +51 48 31.21 V G96
2025-05-19 10:48:53 C 15 32 31.199 +50 33 39.30 X F52
2025-05-19 10:59:30 C 15 32 29.150 +50 33 30.86 X F52
2025-05-19 11:20:35 C 15 32 25.019 +50 33 14.18 X F52
2025-06-15 04:54:27 C 14 07 15.413 +35 34 02.93 V G96
2025-06-15 05:02:39 C 14 07 14.826 +35 33 48.49 V G96
2025-06-15 05:10:50 C 14 07 14.185 +35 33 33.98 V G96
2025-06-15 05:19:01 C 14 07 13.508 +35 33 18.72 V G96
2025-06-17 04:02:27 C 14 03 59.537 +34 10 12.43 V V00
2025-06-17 04:10:32 C 14 03 58.957 +34 09 57.85 V V00
2025-06-17 04:18:34 C 14 03 58.403 +34 09 43.49 V V00
2025-06-17 04:26:37 C 14 03 57.848 +34 09 29.05 V V00
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)