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
2020-04-13 13:44:18 S 15 13 53.198 +46 00 13.93 – V C57
2020-04-13 13:44:18 s 1 -210272.99 8 +164221.06 9810.0 – C57
2020-04-13 14:14:18 S 15 13 46.476 +45 59 08.45 – V C57
2020-04-13 14:14:18 s 1 -210225.30 0 +162122.01 5310.0 – C57
2020-04-13 14:44:18 S 15 13 39.718 +45 57 58.72 – V C57
2020-04-13 14:44:18 s 1 -210163.20 3 +160011.86 8360.0 – C57
2020-04-13 15:14:18 S 15 13 33.367 +45 56 56.11 – V C57
2020-04-13 15:14:18 s 1 -210086.49 3 +157890.60 8740.0 – C57
2020-04-13 15:44:18 S 15 13 26.832 +45 55 49.48 – V C57
2020-04-13 15:44:18 s 1 -209994.95 3 +155758.19 6250.0 – C57
2020-04-13 16:14:18 S 15 13 20.832 +45 54 46.80 – V C57
2020-04-13 16:14:18 s 1 -209888.36 0 +153614.63 670.0 – C57
2020-04-13 16:44:18 S 15 13 13.685 +45 53 36.67 – V C57
2020-04-13 16:44:18 s 1 -209766.48 7 +151459.89 1770.0 – C57
2020-04-13 17:14:18 S 15 13 07.217 +45 52 32.84 – V C57
2020-04-13 17:14:18 s 1 -209629.10 1 +149293.96 9340.0 – C57
2020-04-13 17:44:18 S 15 13 00.295 +45 51 22.32 – V C57
2020-04-13 17:44:18 s 1 -209475.96 5 +147116.82 3120.0 – C57
2020-04-13 18:14:18 S 15 12 54.082 +45 50 20.26 – V C57
2020-04-13 18:14:18 s 1 -209306.83 5 +144928.45 2900.0 – C57
2020-04-13 18:44:18 S 15 12 47.424 +45 49 13.19 – V C57
2020-04-13 18:44:18 s 1 -209121.46 4 +142728.85 8420.0 – C57
2020-04-13 19:14:18 S 15 12 41.002 +45 48 06.08 – V C57
2020-04-13 19:14:18 s 1 -208919.59 6 +140517.98 9440.0 – C57
2020-04-13 19:44:18 S 15 12 33.929 +45 46 56.93 – V C57
2020-04-13 19:44:18 s 1 -208700.97 2 +138295.86 5690.0 – C57
2020-04-13 20:14:18 S 15 12 27.583 +45 45 52.06 – V C57
2020-04-13 20:14:18 s 1 -208465.32 5 +136062.46 6920.0 – C57
2020-04-13 20:44:18 S 15 12 20.731 +45 44 44.38 – V C57
2020-04-13 20:44:18 s 1 -208212.38 3 +133817.78 2860.0 – C57
2020-04-13 21:14:18 S 15 12 13.850 +45 43 33.56 – V C57
2020-04-13 21:14:18 s 1 -207941.86 9 +131561.81 3230.0 – C57
2020-04-13 22:14:18 S 15 12 00.732 +45 41 21.44 – V C57
2020-04-13 22:14:18 s 1 -207346.97 0 +127015.99 6130.0 – C57
2020-04-13 22:44:18 S 15 11 54.022 +45 40 12.43 – V C57
2020-04-13 22:44:18 s 1 -207021.99 6 +124726.13 8070.0 – C57
2020-04-13 23:44:18 S 15 11 39.581 +45 37 49.55 – V C57
2020-04-13 23:44:18 s 1 -206315.46 3 +120112.54 1430.0 – C57
2020-04-14 00:14:18 S 15 11 33.221 +45 36 46.91 – V C57
2020-04-14 00:14:18 s 1 -205933.27 0 +117788.81 2220.0 – C57
2020-04-14 00:44:18 S 15 11 26.623 +45 35 39.41 – V C57
2020-04-14 00:44:18 s 1 -205531.35 6 +115453.81 5300.0 – C57
2020-04-14 01:14:18 S 15 11 19.706 +45 34 28.70 – V C57
2020-04-14 01:14:18 s 1 -205109.38 4 +113107.55 350.0 – C57
2020-04-14 01:44:18 S 15 11 13.020 +45 33 20.95 – V C57
2020-04-14 01:44:18 s 1 -204667.00 6 +110750.04 7010.0 – C57
2020-04-14 02:14:18 S 15 11 05.978 +45 32 10.03 – V C57
2020-04-14 02:14:18 s 1 -204203.86 9 +108381.30 4940.0 – C57
2020-04-14 02:44:18 S 15 10 58.423 +45 30 53.57 – V C57
2020-04-14 02:44:18 s 1 -203719.60 8 +106001.36 3760.0 – C57