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
2018-10-01 01:44:40 s 1 -217708.75 2 +184498.51 6420.0 – C57
2018-10-01 02:14:40 S 05 04 24.758 -60 41 04.60 – V C57
2018-10-01 02:14:40 s 1 -217841.75 7 +182689.61 4300.0 – C57
2018-10-01 02:44:40 S 05 04 15.506 -60 40 34.90 – V C57
2018-10-01 02:44:40 s 1 -217964.29 8 +180871.83 6470.0 – C57
2018-10-01 03:14:40 S 05 04 04.908 -60 40 04.19 – V C57
2018-10-01 03:14:40 s 1 -218076.27 1 +179045.21 2350.0 – C57
2018-10-01 07:14:40 S 05 02 39.905 -60 35 32.71 – V C57
2018-10-01 07:14:40 s 1 -218578.98 1 +164114.60 600.0 – C57
2018-10-01 09:14:40 S 05 01 57.914 -60 33 18.72 – V C57
2018-10-01 09:14:40 s 1 -218556.75 1 +156438.85 9370.0 – C57
2018-10-01 09:44:40 S 05 01 48.094 -60 32 44.99 – V C57
2018-10-01 09:44:40 s 1 -218521.43 4 +154498.16 6650.0 – C57
2018-10-01 10:14:40 S 05 01 36.986 -60 32 11.65 – V C57
2018-10-01 10:14:40 s 1 -218473.96 9 +152548.80 8560.0 – C57
2018-10-01 12:14:40 S 05 00 55.056 -60 29 51.86 – V C57
2018-10-01 12:14:40 s 1 -218160.08 6 +144665.08 0.768 – C57
2018-10-01 12:44:40 S 05 00 45.211 -60 29 18.96 – V C57
2018-10-01 12:44:40 s 1 -218049.96 1 +142672.69 0.155 – C57
2018-10-01 13:14:40 S 05 00 32.947 -60 28 40.80 – V C57
2018-10-01 13:14:40 s 1 -217926.90 6 +140671.78 0.55 – C57
2018-10-01 13:44:40 S 05 00 24.326 -60 28 08.69 – V C57
2018-10-01 13:44:40 s 1 -217790.78 6 +138662.35 0.873 – C57
2018-10-01 15:14:40 S 04 59 51.154 -60 26 17.12 – V C57
2018-10-01 15:14:40 s 1 -217300.86 4 +132583.75 0.14 – C57
2018-10-01 15:44:40 S 04 59 41.542 -60 25 43.72 – V C57
2018-10-01 15:44:40 s 1 -217111.07 1 +130540.57 0.339 – C57
2018-10-01 16:14:40 S 04 59 30.209 -60 25 05.23 – V C57
2018-10-01 16:14:40 s 1 -216907.49 5 +128489.04 0.046 – C57
2018-10-01 16:44:40 S 04 59 19.990 -60 24 31.39 – V C57
2018-10-01 16:44:40 s 1 -216689.98 9 +126429.18 0.172 – C57
2018-10-01 19:14:40 S 04 58 27.012 -60 21 34.49 – V C57
2018-10-01 19:14:40 s 1 -215388.09 3 +116006.38 0.889 – C57
2018-10-01 19:44:40 S 04 58 17.131 -60 20 57.48 – V C57
2018-10-01 19:44:40 s 1 -215083.72 7 +113897.40 0.588 – C57
2018-10-01 22:44:40 S 04 57 13.524 -60 17 19.46 – V C57
2018-10-01 22:44:40 s 1 -212935.58 4 +101076.64 0.07 – C57
2018-10-01 23:14:40 S 04 57 03.720 -60 16 42.24 – V C57
2018-10-01 23:14:40 s 1 -212522.26 1 +98912.541 0.877 – C57
2018-10-01 23:44:40 S 04 56 52.236 -60 15 58.72 – V C57
2018-10-01 23:44:40 s 1 -212092.65 2 +96740.796 0.694 – C57
2018-10-02 01:44:40 S 04 56 11.482 -60 13 39.83 – V C57
2018-10-02 01:44:40 s 1 -210207.54 3 +87978.760 0.734 – C57
2018-10-02 02:14:40 S 04 56 00.576 -60 13 00.55 – V C57
2018-10-02 02:14:40 s 1 -209693.61 8 +85769.853 0.838 – C57
2018-10-02 02:44:40 S 04 55 50.995 -60 12 24.88 – V C57
2018-10-02 02:44:40 s 1 -209162.22 9 +83553.744 0.232 – C57
2018-10-02 04:44:40 S 04 55 09.302 -60 10 04.62 – V C57
2018-10-02 04:44:40 s 1 -206857.84 9 +74619.040 0.126 – C57
2018-10-02 05:14:40 S 04 54 57.514 -60 09 13.07 – V C57