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
2020-03-31 00:44:18 s 1 -211420.06 2 +80881.976 1410.0 – C57
2020-03-31 01:14:18 S 15 59 10.819 +53 25 17.33 – V C57
2020-03-31 01:14:18 s 1 -210712.86 4 +78483.296 9500.0 – C57
2020-03-31 01:44:18 S 15 59 07.370 +53 25 00.26 – V C57
2020-03-31 01:44:18 s 1 -209981.99 5 +76075.744 5840.0 – C57
2020-03-31 02:14:18 S 15 59 04.109 +53 24 46.12 – V C57
2020-03-31 02:14:18 s 1 -209227.05 6 +73659.419 10.0 – C57
2020-03-31 03:14:18 S 15 58 56.976 +53 24 15.01 – V C57
2020-03-31 03:14:18 s 1 -207643.32 6 +68800.867 60.0 – C57
2020-03-31 03:44:18 S 15 58 53.386 +53 23 56.54 – V C57
2020-03-31 03:44:18 s 1 -206813.69 1 +66358.870 5050.0 – C57
2020-03-31 04:14:18 S 15 58 50.095 +53 23 41.57 – V C57
2020-03-31 04:14:18 s 1 -205958.29 5 +63908.557 6070.0 – C57
2020-03-31 04:44:18 S 15 58 46.447 +53 23 26.02 – V C57
2020-03-31 04:44:18 s 1 -205076.69 0 +61450.061 2620.0 – C57
2020-03-31 05:14:18 S 15 58 43.080 +53 23 08.34 – V C57
2020-03-31 05:14:18 s 1 -204168.41 8 +58983.525 4230.0 – C57
2020-03-31 05:44:18 S 15 58 39.252 +53 22 50.99 – V C57
2020-03-31 05:44:18 s 1 -203233.00 8 +56509.100 370.0 – C57
2020-03-31 06:14:18 S 15 58 35.806 +53 22 38.35 – V C57
2020-03-31 06:14:18 s 1 -202269.97 9 +54026.948 540.0 – C57
2020-03-31 06:44:18 S 15 58 32.047 +53 22 21.36 – V C57
2020-03-31 06:44:18 s 1 -201278.83 8 +51537.240 4200.0 – C57
2020-03-31 07:14:18 S 15 58 28.450 +53 22 03.72 – V C57
2020-03-31 07:14:18 s 1 -200259.08 0 +49040.158 790.0 – C57
2020-03-31 07:44:18 S 15 58 24.910 +53 21 48.71 – V C57
2020-03-31 07:44:18 s 1 -199210.18 7 +46535.895 9760.0 – C57
2020-03-31 08:14:18 S 15 58 20.911 +53 21 32.04 – V C57
2020-03-31 08:14:18 s 1 -198131.63 0 +44024.658 530.0 – C57
2020-03-31 08:44:18 S 15 58 17.719 +53 21 13.10 – V C57
2020-03-31 08:44:18 s 1 -197022.86 6 +41506.664 2500.0 – C57
2020-03-31 09:14:18 S 15 58 13.819 +53 20 55.21 – V C57
2020-03-31 09:14:18 s 1 -195883.33 9 +38982.146 5060.0 – C57
2020-03-31 09:44:18 S 15 58 09.826 +53 20 40.06 – V C57
2020-03-31 09:44:18 s 1 -194712.47 9 +36451.349 7590.0 – C57
2020-03-31 10:14:18 S 15 58 06.077 +53 20 22.34 – V C57
2020-03-31 10:14:18 s 1 -193509.70 4 +33914.535 9430.0 – C57
2020-03-31 10:44:18 S 15 58 02.774 +53 20 07.04 – V C57
2020-03-31 10:44:18 s 1 -192274.41 5 +31371.981 9920.0 – C57
2020-03-31 11:14:18 S 15 57 58.699 +53 19 49.30 – V C57
2020-03-31 11:14:18 s 1 -191006.00 1 +28823.981 8390.0 – C57
2020-03-31 11:44:18 S 15 57 54.794 +53 19 33.31 – V C57
2020-03-31 11:44:18 s 1 -189703.83 6 +26270.848 4140.0 – C57
2020-03-31 12:14:18 S 15 57 51.026 +53 19 15.92 – V C57
2020-03-31 12:14:18 s 1 -188367.27 7 +23712.912 6430.0 – C57
2020-03-31 12:44:18 S 15 57 47.162 +53 18 59.22 – V C57
2020-03-31 12:44:18 s 1 -186995.66 8 +21150.525 4540.0 – C57
2020-03-31 13:14:18 S 15 57 43.670 +53 18 40.39 – V C57
2020-03-31 13:14:18 s 1 -185588.33 6 +18584.059 7700.0 – C57
2020-03-31 13:44:18 S 15 57 39.502 +53 18 22.54 – V C57