IAA RAS IAA Minor Planet Database

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
2020-03-22 06:44:19 S 16 11 30.146 +54 49 38.39 – V C57
2020-03-22 06:44:19 s 1 +114922.39 3 +299384.62 7720.0 – C57
2020-03-22 07:14:19 S 16 11 29.422 +54 49 22.30 – V C57
2020-03-22 07:14:19 s 1 +113978.29 8 +300766.67 2330.0 – C57
2020-03-22 09:14:19 S 16 11 26.945 +54 48 41.11 – V C57
2020-03-22 09:14:19 s 1 +110158.38 0 +306178.57 1270.0 – C57
2020-03-22 09:44:19 S 16 11 25.615 +54 48 29.48 – V C57
2020-03-22 09:44:19 s 1 +109192.88 0 +307502.71 1550.0 – C57
2020-03-22 10:14:19 S 16 11 25.030 +54 48 21.10 – V C57
2020-03-22 10:14:19 s 1 +108223.31 4 +308815.41 5210.0 – C57
2020-03-22 11:44:19 S 16 11 23.042 +54 47 43.66 – V C57
2020-03-22 11:44:19 s 1 +105290.89 8 +312685.34 7310.0 – C57
2020-03-22 12:00:37 C 16 11 05.34 +55 01 22.9 – V 703
2020-03-22 12:07:45 C 16 11 04.92 +55 01 20.4 – V 703
2020-03-22 12:14:19 S 16 11 22.327 +54 47 31.02 – V C57
2020-03-22 12:14:19 s 1 +104305.74 4 +313952.75 5300.0 – C57
2020-03-22 12:14:53 C 16 11 04.62 +55 01 17.9 – V 703
2020-03-22 12:22:00 C 16 11 04.33 +55 01 15.6 – V 703
2020-03-22 12:44:19 S 16 11 21.334 +54 47 21.88 – V C57
2020-03-22 12:44:19 s 1 +103316.85 7 +315208.93 7070.0 – C57
2020-03-22 13:14:19 S 16 11 20.657 +54 47 12.08 – V C57
2020-03-22 13:14:19 s 1 +102324.30 2 +316453.95 2680.0 – C57
2020-03-22 13:44:19 S 16 11 19.894 +54 46 56.53 – V C57
2020-03-22 13:44:19 s 1 +101328.14 2 +317687.84 2220.0 – C57
2020-03-22 14:14:19 S 16 11 19.142 +54 46 46.09 – V C57
2020-03-22 14:14:19 s 1 +100328.43 8 +318910.64 5760.0 – C57
2020-03-23 00:44:19 S 16 11 03.828 +54 42 56.12 – V C57
2020-03-23 00:44:19 s 1 +78617.327 0 +342099.61 1530.0 – C57
2020-03-23 01:14:19 S 16 11 02.590 +54 42 40.72 – V C57
2020-03-23 01:14:19 s 1 +77553.749 0 +343088.43 9470.0 – C57
2020-03-23 02:14:19 S 16 11 01.481 +54 42 20.48 – V C57
2020-03-23 02:14:19 s 1 +75419.656 0 +345035.43 1660.0 – C57
2020-03-23 02:44:19 S 16 11 00.706 +54 42 09.40 – V C57
2020-03-23 02:44:19 s 1 +74349.230 0 +345993.68 6020.0 – C57
2020-03-23 03:14:19 S 16 10 59.858 +54 42 00.07 – V C57
2020-03-23 03:14:19 s 1 +73276.609 0 +346941.79 5960.0 – C57
2020-03-23 03:44:19 S 16 10 58.728 +54 41 50.03 – V C57
2020-03-23 03:44:19 s 1 +72201.838 0 +347879.81 1520.0 – C57
2020-03-23 04:14:19 S 16 10 58.183 +54 41 38.11 – V C57
2020-03-23 04:14:19 s 1 +71124.960 0 +348807.77 2770.0 – C57
2020-03-23 04:44:19 S 16 10 57.526 +54 41 26.20 – V C57
2020-03-23 04:44:19 s 1 +70046.016 0 +349725.69 9740.0 – C57
2020-03-23 05:14:19 S 16 10 56.885 +54 41 13.92 – V C57
2020-03-23 05:14:19 s 1 +68965.050 0 +350633.61 2490.0 – C57
2020-03-23 05:44:19 S 16 10 56.124 +54 41 04.96 – V C57
2020-03-23 05:44:19 s 1 +67882.101 0 +351531.56 1070.0 – C57
2020-03-23 06:14:19 S 16 10 54.787 +54 40 55.67 – V C57
2020-03-23 06:14:19 s 1 +66797.213 0 +352419.56 5520.0 – C57
2020-03-23 06:44:19 S 16 10 53.842 +54 40 41.45 – V C57
2020-03-23 06:44:19 s 1 +65710.425 0 +353297.65 5890.0 – C57