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
2020-04-26 09:23:18 C 13 59 29.34 +23 23 00.1 – V T08
2020-04-26 15:31:19 C 13 57 53.524 +22 40 02.49 – V O85
2020-04-26 15:32:04 C 13 57 53.318 +22 39 57.58 – V O85
2020-04-26 15:32:48 C 13 57 53.103 +22 39 52.15 – V O85
2020-04-26 16:20:08 C 13 57 40.164 +22 34 19.68 – V O85
2020-04-26 16:20:53 C 13 57 39.974 +22 34 14.80 – V O85
2020-04-26 16:21:37 C 13 57 39.765 +22 34 09.53 – V O85
2020-04-26 16:42:38 C 13 57 34.043 +22 31 41.34 – V O85
2020-04-26 16:43:22 C 13 57 33.821 +22 31 36.20 – V O85
2020-04-26 16:44:06 C 13 57 33.624 +22 31 31.14 – V O85
2020-04-26 16:50:12 C 13 57 31.943 +22 30 48.08 – V O85
2020-04-26 16:50:56 C 13 57 31.759 +22 30 42.94 – V O85
2020-04-26 16:56:01 C 13 57 30.357 +22 30 07.33 – V O85
2020-04-26 17:02:25 C 13 57 28.619 +22 29 21.99 – V O85
2020-04-26 17:03:09 C 13 57 28.435 +22 29 16.69 – V O85
2020-04-26 17:41:55 C 13 57 20.34 +22 24 46.7 16.7 q C97
2020-04-26 17:44:07 C 13 57 19.68 +22 24 30.3 17.0 q C97
2020-04-26 17:46:17 C 13 57 18.95 +22 24 13.6 16.8 q C97
2020-04-26 17:48:28 C 13 57 18.55 +22 24 00.4 16.8 q C97
2020-04-26 17:50:25 C 13 57 18.02 +22 23 47.2 16.7 q C97
2020-04-26 17:52:06 C 13 57 17.48 +22 23 34.1 16.9 q C97
2020-04-26 17:53:47 C 13 57 17.14 +22 23 22.8 16.5 q C97
2020-04-26 17:55:28 C 13 57 16.65 +22 23 10.8 16.4 q C97
2020-04-26 17:57:09 C 13 57 16.14 +22 22 57.3 16.5 q C97
2020-04-27 16:36:09 C 13 51 20.101 +19 38 45.86 – V O85
2020-04-27 16:46:09 C 13 51 17.340 +19 37 31.45 – V O85
2020-04-27 16:52:47 C 13 51 15.536 +19 36 42.16 – V O85
2020-04-27 16:53:31 C 13 51 15.335 +19 36 37.05 – V O85
2020-04-27 16:58:39 C 13 51 13.953 +19 35 58.45 – V O85
2020-04-27 16:59:23 C 13 51 13.719 +19 35 52.59 – V O85
2020-04-27 20:06:51 C 13 50 26.34 +19 12 21.7 – V L18
2020-04-27 20:07:17 C 13 50 26.22 +19 12 19.2 – V L18
2020-04-27 20:07:42 C 13 50 26.11 +19 12 16.2 – V L18
2020-04-27 20:08:08 C 13 50 26.05 +19 12 12.9 – V L18
2020-04-27 20:08:33 C 13 50 25.91 +19 12 10.0 – V L18
2020-04-27 20:08:59 C 13 50 25.77 +19 12 06.2 – V L18
2020-04-27 20:09:24 C 13 50 25.66 +19 12 03.5 – V L18
2020-04-27 20:09:50 C 13 50 25.51 +19 11 59.9 – V L18
2020-04-27 20:10:16 C 13 50 25.43 +19 11 57.2 – V L18
2020-04-27 20:10:41 C 13 50 25.38 +19 11 54.8 – V L18
2020-04-27 20:11:07 C 13 50 25.25 +19 11 50.1 – V L18
2020-04-27 20:11:51 C 13 50 25.01 +19 11 45.5 – V L18
2020-04-27 20:12:16 C 13 50 24.90 +19 11 41.4 – V L18
2020-04-27 20:12:42 C 13 50 24.81 +19 11 39.1 – V L18
2020-04-27 20:13:08 C 13 50 24.69 +19 11 36.1 – V L18
2020-04-28 01:17:56 C 13 49 06.60 +18 33 30.0 – q W46
2020-04-28 01:53:40 C 13 48 55.41 +18 29 49.9 – q Y00
2020-04-28 01:55:09 C 13 48 55.00 +18 29 39.0 – q Y00
2020-04-28 01:55:38 C 13 48 56.40 +18 28 46.4 – q W46
2020-04-28 01:56:35 C 13 48 54.55 +18 29 27.6 – q Y00