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
2020-03-25 10:44:19 s 1 -51445.027 0 +394758.53 7220.0 – C57
2020-03-25 11:14:19 S 16 09 01.274 +54 21 36.61 – V C57
2020-03-25 11:14:19 s 1 -52561.271 0 +394707.44 3700.0 – C57
2020-03-25 11:44:19 S 16 09 00.619 +54 21 22.50 – V C57
2020-03-25 11:44:19 s 1 -53676.483 0 +394648.18 9400.0 – C57
2020-03-25 12:14:19 S 16 08 59.311 +54 21 12.35 – V C57
2020-03-25 12:14:19 s 1 -54790.641 0 +394580.74 4330.0 – C57
2020-03-25 12:44:19 S 16 08 57.974 +54 21 01.51 – V C57
2020-03-25 12:44:19 s 1 -55903.724 0 +394505.12 8520.0 – C57
2020-03-25 13:14:19 S 16 08 56.150 +54 20 48.73 – V C57
2020-03-25 13:14:19 s 1 -57015.709 0 +394421.34 1990.0 – C57
2020-03-25 13:44:19 S 16 08 55.039 +54 20 39.41 – V C57
2020-03-25 13:44:19 s 1 -58126.574 0 +394329.40 4760.0 – C57
2020-03-25 14:14:19 S 16 08 53.957 +54 20 27.20 – V C57
2020-03-25 14:14:19 s 1 -59236.297 0 +394229.31 6870.0 – C57
2020-03-25 14:44:19 S 16 08 52.094 +54 20 19.57 – V C57
2020-03-25 14:44:19 s 1 -60344.855 0 +394121.07 8320.0 – C57
2020-03-25 15:14:19 S 16 08 50.942 +54 20 03.44 – V C57
2020-03-25 15:14:19 s 1 -61452.227 0 +394004.68 9140.0 – C57
2020-03-25 18:44:19 S 16 08 41.693 +54 18 49.79 – V C57
2020-03-25 18:44:19 s 1 -69168.758 0 +392962.42 9250.0 – C57
2020-03-25 19:14:19 S 16 08 40.027 +54 18 38.77 – V C57
2020-03-25 19:14:19 s 1 -70265.843 0 +392781.08 5870.0 – C57
2020-03-25 19:44:19 S 16 08 38.779 +54 18 28.73 – V C57
2020-03-25 19:44:19 s 1 -71361.543 0 +392591.63 2070.0 – C57
2020-03-25 20:44:19 S 16 08 35.652 +54 18 07.24 – V C57
2020-03-25 20:44:19 s 1 -73548.695 0 +392188.46 3290.0 – C57
2020-03-25 21:14:19 S 16 08 34.330 +54 17 53.59 – V C57
2020-03-25 21:14:19 s 1 -74640.103 0 +391974.73 8350.0 – C57
2020-03-25 21:44:19 S 16 08 32.794 +54 17 43.12 – V C57
2020-03-25 21:44:19 s 1 -75730.037 0 +391752.93 3080.0 – C57
2020-03-25 22:44:19 S 16 08 30.094 +54 17 19.82 – V C57
2020-03-25 22:44:19 s 1 -77905.389 0 +391285.08 1630.0 – C57
2020-03-25 23:14:19 S 16 08 29.143 +54 17 08.48 – V C57
2020-03-25 23:14:19 s 1 -78990.763 0 +391039.04 5500.0 – C57
2020-03-26 00:44:19 S 16 08 24.706 +54 16 36.12 – V C57
2020-03-26 00:44:19 s 1 -82237.407 0 +390252.51 5740.0 – C57
2020-03-26 02:14:19 S 16 08 19.466 +54 16 00.26 – V C57
2020-03-26 02:14:19 s 1 -85469.359 0 +389393.42 4400.0 – C57
2020-03-26 02:44:19 S 16 08 18.677 +54 15 51.30 – V C57
2020-03-26 02:44:19 s 1 -86543.306 0 +389090.94 7050.0 – C57
2020-03-26 03:14:19 S 16 08 16.762 +54 15 40.32 – V C57
2020-03-26 03:14:19 s 1 -87615.528 0 +388780.41 9610.0 – C57
2020-03-26 03:44:19 S 16 08 15.283 +54 15 29.02 – V C57
2020-03-26 03:44:19 s 1 -88686.005 0 +388461.83 7890.0 – C57
2020-03-26 04:44:19 S 16 08 12.626 +54 15 04.00 – V C57
2020-03-26 04:44:19 s 1 -90821.627 0 +387800.52 2970.0 – C57
2020-03-26 05:14:19 S 16 08 10.570 +54 14 51.90 – V C57
2020-03-26 05:14:19 s 1 -91886.727 0 +387457.79 520.0 – C57
2020-03-26 05:44:19 S 16 08 09.262 +54 14 45.89 – V C57