433953 (1997 XR2)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2008557674 ± 2.00e+00
Semi-major axis (a)1.0765222503 AU ± 3.00e+00
Inclination (i)7.19113605° ± 4.00e+00
Long. of Asc. Node (Ω)250.62373550° ± 5.00e+00
Arg. of Perihelion (ω)84.51801041° ± 6.00e+00
Mean Anomaly (M)84.76752829° ± 6.26e-06
Mean Motion (n)0.8824249121°/day ± 3.69e+00
Perihelion dist (q)0.86029655 AU ± 3.22e+00
Aphelion dist (Q)1.29274795 AU ± 4.20e+00
Orbital Period1.11695201 yr ± 4.67e+00
NGA Modelr2
A23.56200169e-06 AU/d²
Physical Parameters
H (abs. magnitude)20.91
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.362″
Uncertainty0
Orbit TypeApollo
MOID0.000707 AU
Observations Used489
Oppositions3
Arc Total1997-2025
First Observation Used1997-12-04
Last Observation Used2025-12-28
Observations (558)
Date Type RA Dec Mag Band Observatory
2016-01-03 10:01:01 C 11 20 08.57 -10 37 08.9 u H21
2016-01-03 10:19:47 C 11 20 09.01 -10 37 25.4 u H21
2016-01-03 10:42:57 C 11 20 09.59 -10 37 46.1 u H21
2016-01-09 14:11:47 C 11 23 36.042 -12 43 28.72 L F51
2016-01-09 14:27:23 C 11 23 36.244 -12 43 41.86 L F51
2016-01-09 14:42:37 C 11 23 36.442 -12 43 54.60 L F51
2016-01-09 14:57:53 C 11 23 36.604 -12 44 07.65 L F51
2016-01-18 09:54:00 C 11 25 04.37 -15 34 42.1 o 691
2016-01-18 10:00:55 C 11 25 04.40 -15 34 47.1 o 691
2016-01-18 10:07:50 C 11 25 04.32 -15 34 52.4 o 691
2016-01-19 10:33:18 C 11 24 56.53 -15 53 38.1 o 291
2016-01-19 10:39:27 C 11 24 56.49 -15 53 42.9 o 291
2016-01-19 10:45:36 C 11 24 56.41 -15 53 47.8 o 291
2016-02-09 06:30:23 C 11 05 54.04 -20 54 51.7 o 691
2016-02-09 06:34:58 C 11 05 53.58 -20 54 51.9 o 691
2016-02-09 06:39:33 C 11 05 53.24 -20 54 53.8 o 691
2016-02-12 12:16:28 C 10 59 51.121 -21 19 02.66 L F51
2016-02-12 12:31:57 C 10 59 49.730 -21 19 06.61 L F51
2016-02-12 12:47:30 C 10 59 48.344 -21 19 10.48 L F51
2016-02-13 07:15:37 C 10 58 16.27 -21 23 41.7 R G45
2016-02-13 07:22:09 C 10 58 15.70 -21 23 43.2 R G45
2016-02-13 07:35:18 C 10 58 14.48 -21 23 46.1 R G45
2016-02-13 07:41:49 C 10 58 13.87 -21 23 48.3 R G45
2016-02-17 09:03:50 C 10 49 22.58 -21 37 57.2 u 807
2016-02-17 09:06:57 C 10 49 22.30 -21 37 57.2 u 807
2016-02-17 09:10:16 C 10 49 21.97 -21 37 57.5 u 807
2016-02-17 09:13:12 C 10 49 21.65 -21 37 57.5 u 807
2016-02-17 09:16:32 C 10 49 21.32 -21 37 57.7 u 807
2016-02-19 04:28:37 C 10 45 08.69 -21 39 23.9 u 807
2016-02-19 04:32:23 C 10 45 08.29 -21 39 23.9 u 807
2016-02-19 04:36:24 C 10 45 07.86 -21 39 23.9 u 807
2016-02-19 04:40:25 C 10 45 07.43 -21 39 24.1 u 807
2016-02-19 04:43:57 C 10 45 07.04 -21 39 24.3 u 807
2016-02-20 04:52:17 C 10 42 40.43 -21 38 45.0 u 807
2016-02-20 04:55:48 C 10 42 40.04 -21 38 44.8 u 807
2016-02-20 05:00:03 C 10 42 39.59 -21 38 44.9 u 807
2016-02-20 05:04:03 C 10 42 39.15 -21 38 44.7 u 807
2016-02-20 05:07:33 C 10 42 38.75 -21 38 44.6 u 807
2016-02-21 04:49:41 C 10 40 12.22 -21 37 03.8 u 807
2016-02-21 04:52:49 C 10 40 11.86 -21 37 03.5 u 807
2016-02-21 04:56:09 C 10 40 11.46 -21 37 03.3 u 807
2016-02-21 04:59:30 C 10 40 11.09 -21 37 02.9 u 807
2016-02-21 05:02:24 C 10 40 10.80 -21 37 02.6 u 807
2016-03-01 06:33:45 C 10 16 27.25 -20 33 42.4 o 691
2016-03-01 06:37:19 C 10 16 26.78 -20 33 40.3 o 691
2016-03-01 06:40:54 C 10 16 26.35 -20 33 38.9 o 691
2016-03-01 07:22:16 C 10 16 21.31 -20 33 19.2 R G45
2016-03-01 07:36:52 C 10 16 19.66 -20 33 11.5 R G45
2016-03-01 07:54:26 C 10 16 17.59 -20 33 01.9 R G45
2016-03-01 08:01:10 C 10 16 16.79 -20 32 59.6 R G45
Radar Observations (8)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2016-11-16 13:00:00 57562.104 1 Hz 8560 -14 -14
2016-11-16 13:20:00 48003405.821 10 us 8560 -14 -14
2016-11-16 13:30:00 47999502.99 1 us 8560 -14 -14
2016-11-16 13:50:00 47991831.305 0.2 us 8560 -14 -14
2016-11-17 08:40:00 45428.255 0.5 Hz 8560 -14 -14
2016-11-17 08:50:00 47652875.31 0.5 us 8560 -14 -14
2016-11-26 06:03:00 55184292.03 4 us 2380 -1 -1
2016-12-06 05:14:00 83074742.44 1 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)