539940 (2017 HW1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4585305393 ± 1.85e-08
Semi-major axis (a)2.1379494101 AU ± 2.27e-08
Inclination (i)33.93429844° ± 5.61e-06
Long. of Asc. Node (Ω)41.31082257° ± 2.15e-06
Arg. of Perihelion (ω)168.80631156° ± 8.78e-06
Mean Anomaly (M)282.85413711° ± 1.06e-05
Mean Motion (n)0.3152943146°/day ± 5.02e-09
Perihelion dist (q)1.15763431 AU ± 4.14e-08
Aphelion dist (Q)3.11826451 AU ± 5.16e-08
Orbital Period3.12605156 yr ± 4.97e-08
Physical Parameters
H (abs. magnitude)18.00
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.518″
Uncertainty0
Orbit TypeAmor
MOID0.155744 AU
Observations Used1400
Oppositions9
Arc Total2012-2025
First Observation Used2012-10-22
Last Observation Used2025-12-13
Observations (2295)
Date Type RA Dec Mag Band Observatory
2020-03-26 05:44:19 s 1 -92949.987 0 +387107.02 8030.0 C57
2020-03-26 06:14:19 S 16 08 07.560 +54 14 31.92 V C57
2020-03-26 06:14:19 s 1 -94011.387 0 +386748.21 5490.0 C57
2020-03-26 07:14:19 S 16 08 04.790 +54 14 06.32 V C57
2020-03-26 07:14:19 s 1 -96128.507 0 +386006.46 150.0 C57
2020-03-26 07:44:19 S 16 08 03.230 +54 13 58.94 V C57
2020-03-26 07:44:19 s 1 -97184.181 0 +385623.53 7310.0 C57
2020-03-26 08:14:19 S 16 08 01.884 +54 13 47.39 V C57
2020-03-26 08:14:19 s 1 -98237.899 0 +385232.56 4320.0 C57
2020-03-26 08:44:19 S 16 08 00.156 +54 13 34.36 V C57
2020-03-26 08:44:19 s 1 -99289.639 0 +384833.55 1160.0 C57
2020-03-26 09:14:19 S 16 07 58.411 +54 13 21.90 V C57
2020-03-26 09:14:19 s 1 -100339.37 7 +384426.50 7810.0 C57
2020-03-26 09:44:19 S 16 07 56.839 +54 13 12.11 V C57
2020-03-26 09:44:19 s 1 -101387.08 8 +384011.41 4250.0 C57
2020-03-26 10:14:19 S 16 07 55.639 +54 13 01.20 V C57
2020-03-26 10:14:19 s 1 -102432.74 8 +383588.29 440.0 C57
2020-03-26 10:44:19 S 16 07 53.570 +54 12 50.04 V C57
2020-03-26 10:44:19 s 1 -103476.33 5 +383157.13 6380.0 C57
2020-03-26 11:14:19 S 16 07 52.298 +54 12 41.51 V C57
2020-03-26 11:14:19 s 1 -104517.82 4 +382717.94 2020.0 C57
2020-03-26 11:44:19 S 16 07 50.628 +54 12 27.83 V C57
2020-03-26 11:44:19 s 1 -105557.19 0 +382270.71 7360.0 C57
2020-03-26 12:14:19 S 16 07 48.799 +54 12 15.80 V C57
2020-03-26 12:14:19 s 1 -106594.41 0 +381815.44 2360.0 C57
2020-03-26 12:44:19 S 16 07 47.669 +54 12 07.38 V C57
2020-03-26 12:44:19 s 1 -107629.46 0 +381352.13 7010.0 C57
2020-03-26 13:44:19 S 16 07 44.352 +54 11 41.86 V C57
2020-03-26 13:44:19 s 1 -109692.94 9 +380401.41 5130.0 C57
2020-03-26 14:14:19 S 16 07 42.706 +54 11 29.94 V C57
2020-03-26 14:14:19 s 1 -110721.34 0 +379913.99 8560.0 C57
2020-03-26 14:44:19 S 16 07 41.184 +54 11 20.26 V C57
2020-03-26 14:44:19 s 1 -111747.46 2 +379418.53 1530.0 C57
2020-03-26 15:14:19 S 16 07 39.691 +54 11 09.67 V C57
2020-03-26 15:14:19 s 1 -112771.29 0 +378915.03 4030.0 C57
2020-03-26 16:14:19 S 16 07 36.206 +54 10 44.94 V C57
2020-03-26 16:14:19 s 1 -114811.96 4 +377883.90 7500.0 C57
2020-03-26 17:44:19 S 16 07 31.217 +54 10 11.50 V C57
2020-03-26 17:44:19 s 1 -117855.14 7 +376276.86 8520.0 C57
2020-03-26 18:14:19 S 16 07 29.597 +54 10 00.05 V C57
2020-03-26 18:14:19 s 1 -118864.68 4 +375725.09 7650.0 C57
2020-03-26 18:44:19 S 16 07 27.900 +54 09 47.30 V C57
2020-03-26 18:44:19 s 1 -119871.75 1 +375165.26 6120.0 C57
2020-03-26 19:14:19 S 16 07 26.165 +54 09 39.10 V C57
2020-03-26 19:14:19 s 1 -120876.32 2 +374597.39 3930.0 C57
2020-03-26 19:44:19 S 16 07 24.439 +54 09 24.41 V C57
2020-03-26 19:44:19 s 1 -121878.37 0 +374021.45 1030.0 C57
2020-03-26 20:14:19 S 16 07 22.944 +54 09 14.62 V C57
2020-03-26 20:14:19 s 1 -122877.86 9 +373437.46 7410.0 C57
2020-03-26 21:14:19 S 16 07 19.565 +54 08 50.96 V C57