IAA RAS IAA Minor Planet Database

523815 (2009 HW44)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5921917799 ± 8.83e-08
Semi-major axis (a)2.6852148159 AU ± 8.18e-08
Inclination (i)41.10511559° ± 2.85e-05
Long. of Asc. Node (Ω)37.82675349° ± 9.13e-06
Arg. of Perihelion (ω)296.58720972° ± 2.90e-05
Mean Anomaly (M)229.77083331° ± 2.42e-05
Mean Motion (n)0.2239977851°/day ± 1.02e-08
Perihelion dist (q)1.09505267 AU ± 2.39e-07
Aphelion dist (Q)4.27537696 AU ± 2.70e-07
Orbital Period4.40016085 yr ± 2.01e-07
Physical Parameters
H (abs. magnitude)17.56
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual1.178″
Uncertainty0
Orbit TypeAmor
MOID0.316309 AU
Observations Used648
Oppositions10
Arc Total2009-2022
First Observation Used2009-04-22
Last Observation Used2022-05-21
Observations (1189)
Date Type RA Dec Mag Band Observatory
2018-10-15 05:44:40 s 1 -206909.13 1 +197651.22 3620.0 – C57
2018-10-15 06:14:40 S 02 55 04.939 -48 02 39.80 – V C57
2018-10-15 06:14:40 s 1 -207102.63 5 +195864.01 2090.0 – C57
2018-10-15 06:44:40 S 02 54 55.846 -48 00 49.61 – V C57
2018-10-15 06:44:40 s 1 -207286.14 7 +194067.34 6620.0 – C57
2018-10-15 07:44:40 S 02 54 34.176 -47 56 32.32 – V C57
2018-10-15 07:44:40 s 1 -207622.78 6 +190445.65 1430.0 – C57
2018-10-15 08:14:40 S 02 54 22.841 -47 54 29.45 – V C57
2018-10-15 08:14:40 s 1 -207775.70 1 +188620.61 530.0 – C57
2018-10-15 09:14:40 S 02 54 04.694 -47 50 50.03 – V C57
2018-10-15 09:14:40 s 1 -208050.18 1 +184942.16 9030.0 – C57
2018-10-15 11:44:40 S 02 53 11.659 -47 40 16.86 – V C57
2018-10-15 11:44:40 s 1 -208548.28 5 +175580.53 570.0 – C57
2018-10-15 12:14:40 S 02 53 03.386 -47 38 33.11 – V C57
2018-10-15 12:14:40 s 1 -208614.73 3 +173679.85 780.0 – C57
2018-10-15 12:44:40 S 02 52 53.222 -47 36 32.18 – V C57
2018-10-15 12:44:40 s 1 -208669.84 5 +171769.72 9350.0 – C57
2018-10-15 14:44:40 S 02 52 11.280 -47 28 02.57 – V C57
2018-10-15 14:44:40 s 1 -208774.42 0 +164034.83 2920.0 – C57
2018-10-15 15:14:40 S 02 52 02.501 -47 26 14.32 – V C57
2018-10-15 15:14:40 s 1 -208770.95 3 +162077.55 2430.0 – C57
2018-10-15 15:44:40 S 02 51 53.393 -47 24 21.49 – V C57
2018-10-15 15:44:40 s 1 -208755.37 9 +160110.87 5870.0 – C57
2018-10-15 16:14:40 S 02 51 41.342 -47 21 56.81 – V C57
2018-10-15 16:14:40 s 1 -208727.56 1 +158134.78 2450.0 – C57
2018-10-15 18:14:40 S 02 51 01.742 -47 13 47.68 – V C57
2018-10-15 18:14:40 s 1 -208491.06 4 +150136.66 4040.0 – C57
2018-10-15 19:14:40 S 02 50 43.414 -47 09 46.73 – V C57
2018-10-15 19:14:40 s 1 -208292.95 0 +146078.60 4870.0 – C57
2018-10-15 19:44:40 S 02 50 33.338 -47 07 50.95 – V C57
2018-10-15 19:44:40 s 1 -208175.41 4 +144037.04 110.0 – C57
2018-10-15 23:14:40 S 02 49 26.261 -46 53 44.34 – V C57
2018-10-15 23:14:40 s 1 -206968.17 1 +129487.25 2120.0 – C57
2018-10-16 02:44:40 S 02 48 17.954 -46 39 04.82 – V C57
2018-10-16 02:44:40 s 1 -205046.62 8 +114490.86 0.914 – C57
2018-10-16 03:14:40 S 02 48 07.678 -46 36 59.36 – V C57
2018-10-16 03:14:40 s 1 -204710.19 0 +112312.73 0.519 – C57
2018-10-16 07:44:40 S 02 46 39.084 -46 17 44.92 – V C57
2018-10-16 07:44:40 s 1 -200934.31 8 +92318.965 0.813 – C57
2018-10-16 11:44:40 S 02 45 24.749 -46 01 13.37 – V C57
2018-10-16 11:44:40 s 1 -196356.29 0 +73983.187 0.93 – C57
2018-10-16 12:14:40 S 02 45 14.856 -45 58 55.09 – V C57
2018-10-16 12:14:40 s 1 -195696.60 1 +71656.166 0.009 – C57
2018-10-16 12:44:40 S 02 45 06.221 -45 56 59.75 – V C57
2018-10-16 12:44:40 s 1 -195016.59 6 +69321.704 0.554 – C57
2018-10-16 14:44:40 S 02 44 27.857 -45 48 24.88 – V C57
2018-10-16 14:44:40 s 1 -192087.77 5 +59911.900 0.847 – C57
2018-10-16 15:14:40 S 02 44 18.667 -45 46 22.19 – V C57
2018-10-16 15:14:40 s 1 -191301.91 1 +57542.128 0.031 – C57
2018-10-16 18:44:40 S 02 43 13.697 -45 31 32.63 – V C57