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
2018-10-11 22:44:40 s 1 -95490.601 0 +365558.44 2720.0 – C57
2018-10-11 23:14:40 S 03 24 12.994 -52 48 00.94 – V C57
2018-10-11 23:14:40 s 1 -96515.322 0 +365189.59 9220.0 – C57
2018-10-12 02:44:40 S 03 22 48.720 -52 36 31.54 – V C57
2018-10-12 02:44:40 s 1 -103620.10 6 +362362.95 5490.0 – C57
2018-10-12 12:44:40 S 03 18 56.760 -52 03 57.82 – V C57
2018-10-12 12:44:40 s 1 -123194.78 8 +351930.68 410.0 – C57
2018-10-12 13:14:40 S 03 18 45.053 -52 02 16.62 – V C57
2018-10-12 13:14:40 s 1 -124142.68 4 +351317.51 6940.0 – C57
2018-10-12 14:44:40 S 03 18 09.965 -51 57 08.35 – V C57
2018-10-12 14:44:40 s 1 -126967.40 7 +349425.67 2530.0 – C57
2018-10-12 15:14:40 S 03 17 58.128 -51 55 29.50 – V C57
2018-10-12 15:14:40 s 1 -127902.56 3 +348777.61 5840.0 – C57
2018-10-12 15:44:40 S 03 17 46.702 -51 53 48.70 – V C57
2018-10-12 15:44:40 s 1 -128834.46 2 +348120.83 2930.0 – C57
2018-10-12 16:14:40 S 03 17 35.083 -51 52 05.70 – V C57
2018-10-12 16:14:40 s 1 -129763.07 4 +347455.32 3620.0 – C57
2018-10-12 18:14:40 S 03 16 50.030 -51 45 24.41 – V C57
2018-10-12 18:14:40 s 1 -133444.05 9 +344705.99 9040.0 – C57
2018-10-12 18:44:40 S 03 16 38.710 -51 43 47.39 – V C57
2018-10-12 18:44:40 s 1 -134355.79 0 +343996.83 5190.0 – C57
2018-10-13 02:14:40 S 03 13 47.647 -51 17 59.17 – V C57
2018-10-13 02:14:40 s 1 -147598.34 8 +332309.71 6140.0 – C57
2018-10-13 02:44:40 S 03 13 37.274 -51 16 22.76 – V C57
2018-10-13 02:44:40 s 1 -148450.84 3 +331460.46 1860.0 – C57
2018-10-13 06:14:40 S 03 12 18.187 -51 04 04.26 – V C57
2018-10-13 06:14:40 s 1 -154304.98 3 +325269.59 1150.0 – C57
2018-10-13 08:14:40 S 03 11 30.518 -50 56 35.45 – V C57
2018-10-13 08:14:40 s 1 -157558.08 8 +321538.20 8560.0 – C57
2018-10-13 08:44:40 S 03 11 20.494 -50 55 01.49 – V C57
2018-10-13 08:44:40 s 1 -158360.54 0 +320583.29 7070.0 – C57
2018-10-13 09:14:40 S 03 11 10.001 -50 53 21.95 – V C57
2018-10-13 09:14:40 s 1 -159158.58 7 +319619.54 2840.0 – C57
2018-10-13 09:44:40 S 03 10 59.052 -50 51 37.12 – V C57
2018-10-13 09:44:40 s 1 -159952.19 4 +318646.96 5660.0 – C57
2018-10-13 11:44:40 S 03 10 13.596 -50 44 19.18 – V C57
2018-10-13 11:44:40 s 1 -163081.46 0 +314668.11 3120.0 – C57
2018-10-13 12:14:40 S 03 10 01.591 -50 42 25.63 – V C57
2018-10-13 12:14:40 s 1 -163852.29 5 +313651.25 7970.0 – C57
2018-10-13 13:14:40 S 03 09 40.925 -50 39 05.44 – V C57
2018-10-13 13:14:40 s 1 -165379.91 3 +311590.90 4710.0 – C57
2018-10-13 14:44:40 S 03 09 06.778 -50 33 31.46 – V C57
2018-10-13 14:44:40 s 1 -167635.61 8 +308433.73 4120.0 – C57
2018-10-13 15:14:40 S 03 08 55.092 -50 31 32.38 – V C57
2018-10-13 15:14:40 s 1 -168377.83 2 +307363.55 170.0 – C57
2018-10-13 15:44:40 S 03 08 43.776 -50 29 45.74 – V C57
2018-10-13 15:44:40 s 1 -169115.13 4 +306284.45 620.0 – C57
2018-10-13 18:14:40 S 03 07 48.720 -50 20 39.41 – V C57
2018-10-13 18:14:40 s 1 -172726.49 3 +300755.15 800.0 – C57
2018-10-13 18:44:40 S 03 07 37.882 -50 18 50.26 – V C57