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
2020-03-29 18:44:18 s 1 -221504.15 7 +207108.05 7460.0 – C57
2020-03-29 19:44:18 S 16 02 12.413 +53 39 37.48 – V C57
2020-03-29 19:44:18 s 1 -221948.57 6 +203470.12 6280.0 – C57
2020-03-29 21:14:18 S 16 02 04.625 +53 38 56.33 – V C57
2020-03-29 21:14:18 s 1 -222536.55 9 +197940.66 2130.0 – C57
2020-03-29 21:44:18 S 16 02 01.382 +53 38 43.12 – V C57
2020-03-29 21:44:18 s 1 -222711.08 4 +196078.09 3620.0 – C57
2020-03-29 22:14:18 S 16 01 58.874 +53 38 30.62 – V C57
2020-03-29 22:14:18 s 1 -222874.66 1 +194205.79 6340.0 – C57
2020-03-29 22:44:18 S 16 01 55.841 +53 38 13.88 – V C57
2020-03-29 22:44:18 s 1 -223027.15 8 +192323.74 150.0 – C57
2020-03-29 23:14:18 S 16 01 53.174 +53 38 00.13 – V C57
2020-03-29 23:14:18 s 1 -223168.44 3 +190431.94 4940.0 – C57
2020-03-29 23:44:18 S 16 01 50.496 +53 37 47.28 – V C57
2020-03-29 23:44:18 s 1 -223298.37 9 +188530.36 550.0 – C57
2020-03-30 00:14:18 S 16 01 47.518 +53 37 33.92 – V C57
2020-03-30 00:14:18 s 1 -223416.82 9 +186618.99 6870.0 – C57
2020-03-30 00:44:18 S 16 01 44.789 +53 37 17.65 – V C57
2020-03-30 00:44:18 s 1 -223523.65 0 +184697.81 3750.0 – C57
2020-03-30 01:14:18 S 16 01 41.894 +53 37 09.12 – V C57
2020-03-30 01:14:18 s 1 -223618.70 1 +182766.83 1040.0 – C57
2020-03-30 01:44:18 S 16 01 38.501 +53 36 52.34 – V C57
2020-03-30 01:44:18 s 1 -223701.83 5 +180826.02 8610.0 – C57
2020-03-30 02:14:18 S 16 01 36.319 +53 36 39.17 – V C57
2020-03-30 02:14:18 s 1 -223772.90 5 +178875.36 6310.0 – C57
2020-03-30 03:14:18 S 16 01 30.300 +53 36 08.75 – V C57
2020-03-30 03:14:18 s 1 -223878.24 3 +174944.49 1490.0 – C57
2020-03-30 03:44:18 S 16 01 27.096 +53 35 59.03 – V C57
2020-03-30 03:44:18 s 1 -223912.20 1 +172964.25 8660.0 – C57
2020-03-30 04:14:18 S 16 01 24.758 +53 35 41.50 – V C57
2020-03-30 04:14:18 s 1 -223933.47 4 +170974.13 5350.0 – C57
2020-03-30 05:14:18 S 16 01 18.533 +53 35 16.15 – V C57
2020-03-30 05:14:18 s 1 -223937.31 2 +166964.20 6620.0 – C57
2020-03-30 06:44:18 S 16 01 09.703 +53 34 30.86 – V C57
2020-03-30 06:44:18 s 1 -223843.77 2 +160874.96 5750.0 – C57
2020-03-30 07:44:18 S 16 01 03.871 +53 34 02.78 – V C57
2020-03-30 07:44:18 s 1 -223713.17 3 +156765.83 4610.0 – C57
2020-03-30 08:14:18 S 16 01 00.732 +53 33 47.38 – V C57
2020-03-30 08:14:18 s 1 -223626.85 7 +154696.36 1330.0 – C57
2020-03-30 09:14:18 S 16 00 54.986 +53 33 18.65 – V C57
2020-03-30 09:14:18 s 1 -223411.25 0 +150527.59 8400.0 – C57
2020-03-30 10:14:18 S 16 00 48.295 +53 32 48.91 – V C57
2020-03-30 10:14:18 s 1 -223137.04 0 +146319.03 5680.0 – C57
2020-03-30 10:44:18 S 16 00 45.425 +53 32 35.66 – V C57
2020-03-30 10:44:18 s 1 -222977.45 6 +144199.83 150.0 – C57
2020-03-30 11:14:18 S 16 00 42.682 +53 32 20.47 – V C57
2020-03-30 11:14:18 s 1 -222802.61 1 +142070.68 1550.0 – C57
2020-03-30 11:44:18 S 16 00 39.590 +53 32 07.91 – V C57
2020-03-30 11:44:18 s 1 -222612.29 2 +139931.60 9670.0 – C57
2020-03-30 12:14:18 S 16 00 36.422 +53 31 53.58 – V C57