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
2020-03-24 20:14:19 s 1 -18725.309 0 +392645.72 1220.0 – C57
2020-03-24 20:44:19 S 16 09 37.632 +54 26 53.34 – V C57
2020-03-24 20:44:19 s 1 -19861.747 0 +392835.43 820.0 – C57
2020-03-24 21:14:19 S 16 09 36.761 +54 26 43.12 – V C57
2020-03-24 21:14:19 s 1 -20997.807 0 +393016.71 8930.0 – C57
2020-03-24 21:44:19 S 16 09 35.086 +54 26 30.98 – V C57
2020-03-24 21:44:19 s 1 -22133.465 0 +393189.57 5580.0 – C57
2020-03-24 22:44:19 S 16 09 32.870 +54 26 09.06 – V C57
2020-03-24 22:44:19 s 1 -24403.487 0 +393510.04 4610.0 – C57
2020-03-24 23:14:19 S 16 09 32.134 +54 26 00.13 – V C57
2020-03-24 23:14:19 s 1 -25537.803 0 +393657.68 7040.0 – C57
2020-03-24 23:44:19 S 16 09 30.430 +54 25 47.75 – V C57
2020-03-24 23:44:19 s 1 -26671.626 0 +393796.94 8110.0 – C57
2020-03-25 00:14:19 S 16 09 29.395 +54 25 37.85 – V C57
2020-03-25 00:14:19 s 1 -27804.933 0 +393927.83 7850.0 – C57
2020-03-25 00:44:19 S 16 09 28.164 +54 25 28.63 – V C57
2020-03-25 00:44:19 s 1 -28937.700 0 +394050.35 6280.0 – C57
2020-03-25 01:44:19 S 16 09 25.826 +54 25 07.79 – V C57
2020-03-25 01:44:19 s 1 -31201.525 0 +394270.35 9320.0 – C57
2020-03-25 02:14:19 S 16 09 24.362 +54 24 52.38 – V C57
2020-03-25 02:14:19 s 1 -32332.538 0 +394367.84 3970.0 – C57
2020-03-25 02:44:19 S 16 09 23.462 +54 24 39.46 – V C57
2020-03-25 02:44:19 s 1 -33462.921 0 +394457.01 7410.0 – C57
2020-03-25 03:14:19 S 16 09 22.142 +54 24 33.08 – V C57
2020-03-25 03:14:19 s 1 -34592.651 0 +394537.86 9660.0 – C57
2020-03-25 04:14:19 S 16 09 19.771 +54 24 10.91 – V C57
2020-03-25 04:14:19 s 1 -36850.062 0 +394674.66 710.0 – C57
2020-03-25 04:44:19 S 16 09 18.288 +54 23 59.68 – V C57
2020-03-25 04:44:19 s 1 -37977.698 0 +394730.62 9540.0 – C57
2020-03-25 05:14:19 S 16 09 17.160 +54 23 45.71 – V C57
2020-03-25 05:14:19 s 1 -39104.592 0 +394778.30 7290.0 – C57
2020-03-25 05:44:19 S 16 09 15.888 +54 23 37.54 – V C57
2020-03-25 05:44:19 s 1 -40230.721 0 +394817.70 3970.0 – C57
2020-03-25 06:14:19 S 16 09 14.316 +54 23 26.48 – V C57
2020-03-25 06:14:19 s 1 -41356.062 0 +394848.85 9600.0 – C57
2020-03-25 06:44:19 S 16 09 13.517 +54 23 16.04 – V C57
2020-03-25 06:44:19 s 1 -42480.594 0 +394871.73 4220.0 – C57
2020-03-25 07:14:19 S 16 09 12.134 +54 23 04.49 – V C57
2020-03-25 07:14:19 s 1 -43604.293 0 +394886.37 7840.0 – C57
2020-03-25 07:44:19 S 16 09 10.682 +54 22 54.26 – V C57
2020-03-25 07:44:19 s 1 -44727.139 0 +394892.77 480.0 – C57
2020-03-25 08:14:19 S 16 09 09.518 +54 22 40.37 – V C57
2020-03-25 08:14:19 s 1 -45849.107 0 +394890.94 2180.0 – C57
2020-03-25 08:44:19 S 16 09 08.254 +54 22 33.74 – V C57
2020-03-25 08:44:19 s 1 -46970.177 0 +394880.88 2940.0 – C57
2020-03-25 09:14:19 S 16 09 06.864 +54 22 20.46 – V C57
2020-03-25 09:14:19 s 1 -48090.326 0 +394862.60 2810.0 – C57
2020-03-25 09:44:19 S 16 09 06.290 +54 22 07.00 – V C57
2020-03-25 09:44:19 s 1 -49209.532 0 +394836.11 1790.0 – C57
2020-03-25 10:44:19 S 16 09 02.947 +54 21 47.41 – V C57