437844 (1999 MN)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6653473346 ± 2.00e+00
Semi-major axis (a)0.6740395680 AU ± 3.00e+00
Inclination (i)2.03172774° ± 4.00e+00
Long. of Asc. Node (Ω)81.38643524° ± 5.00e+00
Arg. of Perihelion (ω)9.20346724° ± 6.00e+00
Mean Anomaly (M)107.50856911° ± 7.62e-06
Mean Motion (n)1.7810831244°/day ± 1.19e+01
Perihelion dist (q)0.22556914 AU ± 1.68e+00
Aphelion dist (Q)1.12251000 AU ± 5.17e+00
Orbital Period0.55338590 yr ± 3.69e+00
NGA Modelr2
A24.15125214e-06 AU/d²
Physical Parameters
H (abs. magnitude)21.01
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-27
RMS Residual0.348″
Uncertainty0
Orbit TypeAten
MOID0.005953 AU
Observations Used264
Oppositions21
Arc Total1999-2025
First Observation Used1999-06-22
Last Observation Used2025-07-14
Observations (290)
Date Type RA Dec Mag Band Observatory
1999-06-22 08:30:00 c 21 22 59.00 -19 40 57.7 d 703
1999-06-22 08:50:44 c 21 22 54.02 -19 41 39.2 d 703
1999-06-22 09:14:30 c 21 22 48.39 -19 42 25.6 d 703
1999-06-22 09:40:23 c 21 22 42.06 -19 43 15.5 d 703
1999-06-23 10:03:57 c 21 16 43.96 -20 34 05.3 d 703
1999-06-23 10:10:24 c 21 16 42.27 -20 34 21.4 d 703
1999-06-23 10:16:46 c 21 16 40.46 -20 34 33.3 d 703
1999-06-23 10:23:08 c 21 16 38.57 -20 34 48.1 d 703
1999-06-24 15:25:01 C 21 08 25.30 -21 41 08.3 426
1999-06-24 15:28:04 C 21 08 24.26 -21 41 16.0 426
1999-06-24 15:32:49 C 21 08 22.75 -21 41 28.0 426
1999-06-24 15:37:29 C 21 08 21.24 -21 41 39.4 426
1999-06-25 00:54:44 C 21 05 22.32 -22 06 28.2 d 046
1999-06-25 00:56:34 C 21 05 21.66 -22 06 33.5 d 046
1999-06-25 00:57:42 C 21 05 21.31 -22 06 36.7 d 046
1999-06-25 00:59:37 C 21 05 20.70 -22 06 40.9 d 046
1999-06-25 14:49:56 C 21 00 39.82 -22 41 44.5 426
1999-06-25 14:53:01 C 21 00 38.69 -22 41 52.8 426
1999-06-25 14:56:34 C 21 00 37.41 -22 42 02.6 426
1999-06-25 14:59:47 C 21 00 36.19 -22 42 11.8 426
1999-07-01 11:49:03 C 19 39 46.35 -30 46 17.4 z 428
1999-07-01 11:54:41 C 19 39 41.37 -30 46 39.9 z 428
1999-07-02 10:01:45 C 19 18 57.76 -32 10 18.2 422
1999-07-02 10:02:20 C 19 18 57.16 -32 10 20.7 422
1999-07-02 10:02:57 C 19 18 56.54 -32 10 22.9 422
1999-07-02 23:14:04 C 19 05 05.58 -33 00 05.0 z 587
1999-07-02 23:16:26 C 19 05 03.00 -33 00 12.6 z 587
1999-07-02 23:19:20 C 19 04 59.79 -33 00 23.8 z 587
1999-07-03 13:49:03 C 18 48 42.75 -33 46 01.2 426
1999-07-03 13:53:00 C 18 48 38.01 -33 46 13.6 426
1999-07-03 13:55:18 C 18 48 35.24 -33 46 21.0 426
1999-07-03 13:57:30 C 18 48 32.57 -33 46 28.2 426
1999-07-04 02:14:47 C 18 33 43.78 -34 22 14.4 z 859
1999-07-04 02:16:52 C 18 33 41.25 -34 22 19.6 z 859
1999-07-04 02:22:56 C 18 33 33.49 -34 22 35.7 z 859
1999-07-05 13:38:45 C 17 46 54.90 -35 28 41.0 360
1999-07-05 13:41:45 C 17 46 50.58 -35 28 44.4 360
1999-07-05 13:43:59 C 17 46 47.37 -35 28 45.9 360
1999-07-05 13:45:59 C 17 46 44.55 -35 28 48.1 360
1999-07-08 20:35:44 C 15 56 42.25 -33 27 30.4 z 587
1999-07-09 11:51:44 C 15 37 34.71 -32 25 57.4 z 402
1999-07-09 11:53:32 C 15 37 32.47 -32 25 49.8 z 402
1999-07-15 11:18:35 C 13 39 05.40 -21 08 46.3 426
1999-07-15 11:23:10 C 13 39 02.90 -21 08 27.9 426
1999-07-15 11:27:14 C 13 39 00.74 -21 08 11.0 426
1999-07-15 11:30:08 C 13 38 59.18 -21 07 59.1 426
1999-07-17 09:51:11 C 13 18 10.67 -18 15 11.6 426
1999-07-17 09:55:54 C 13 18 08.77 -18 14 56.0 426
1999-07-17 10:01:16 C 13 18 06.56 -18 14 37.1 426
1999-07-17 10:06:42 C 13 18 04.28 -18 14 18.2 426
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2004-07-22 18:36:00 -248029.89 1 Hz 2380 -1 -1
2004-07-23 18:45:00 112608631.7 4 us 2380 -1 -1
2005-05-30 18:10:00 82102.17 0.5 Hz 2380 -1 -1
2005-05-31 19:10:00 51957109.5 0.5 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)