1580 Betulia (1950 KA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4876047101 ± 2.00e+00
Semi-major axis (a)2.1949743206 AU ± 3.00e+00
Inclination (i)52.18777815° ± 4.00e+00
Long. of Asc. Node (Ω)62.22480892° ± 5.00e+00
Arg. of Perihelion (ω)159.71713922° ± 6.00e+00
Mean Anomaly (M)80.26713945° ± 3.89e-05
Mean Motion (n)0.3030875594°/day ± 6.21e-01
Perihelion dist (q)1.12469450 AU ± 4.65e+00
Aphelion dist (Q)3.26525414 AU ± 6.26e+00
Orbital Period3.25195229 yr ± 6.67e+00
NGA Modelr2
A21.40142724e-06 AU/d²
Physical Parameters
H (abs. magnitude)14.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.282″
Uncertainty0
Orbit TypeAmor
MOID0.133321 AU
Observations Used1981
Radar Obs Used10
Gaia Obs Used93
Oppositions46
Arc Total1950-2016
First Observation Used1950-05-22
Last Observation Used2025-12-13
Observations (2056)
Date Type RA Dec Mag Band Observatory
2007-11-17 08:13:52 C 04 47 20.84 +32 49 53.2 c 704
2007-11-17 08:32:04 C 04 47 19.42 +32 50 00.9 c 704
2007-11-17 08:32:21 C 04 47 19.51 +32 50 00.9 c 704
2007-11-17 08:50:17 C 04 47 18.17 +32 50 08.5 c 704
2007-11-17 08:50:34 C 04 47 18.23 +32 50 08.1 c 704
2007-11-29 08:35:08 C 04 25 20.96 +34 37 13.7 r H45
2007-11-29 08:36:59 C 04 25 20.85 +34 37 14.7 r H45
2007-11-29 08:38:36 C 04 25 20.67 +34 37 15.4 r H45
2007-11-29 08:40:18 C 04 25 20.53 +34 37 16.0 r H45
2007-11-29 08:42:00 C 04 25 20.43 +34 37 16.3 r H45
2007-12-03 21:02:20 C 04 16 22.35 +35 10 33.8 c A24
2007-12-03 21:03:47 C 04 16 22.22 +35 10 34.5 c A24
2007-12-03 21:25:56 C 04 16 20.33 +35 10 40.7 c A24
2007-12-03 21:49:31 C 04 16 18.34 +35 10 47.3 c A24
2007-12-03 22:11:38 C 04 16 16.45 +35 10 53.5 c A24
2007-12-03 22:13:06 C 04 16 16.37 +35 10 53.8 c A24
2007-12-04 21:35:02 C 04 14 18.95 +35 17 27.7 c A24
2007-12-04 21:36:27 C 04 14 18.75 +35 17 28.1 c A24
2007-12-04 21:54:42 C 04 14 17.23 +35 17 33.2 c A24
2007-12-04 22:14:21 C 04 14 15.55 +35 17 38.7 c A24
2007-12-04 22:32:35 C 04 14 13.98 +35 17 43.8 c A24
2007-12-04 22:34:01 C 04 14 13.89 +35 17 44.3 c A24
2007-12-05 20:56:38 C 04 12 21.21 +35 23 48.7 c A24
2007-12-05 20:58:04 C 04 12 21.09 +35 23 49.0 c A24
2007-12-10 23:29:11 C 04 02 04.29 +35 53 28.4 r J46
2007-12-17 21:39:27 C 03 48 32.05 +36 24 02.4 c A24
2007-12-17 21:40:33 C 03 48 31.97 +36 24 02.7 c A24
2007-12-17 21:55:57 C 03 48 30.73 +36 24 05.0 c A24
2007-12-17 22:12:26 C 03 48 29.41 +36 24 07.7 c A24
2007-12-17 22:27:50 C 03 48 28.14 +36 24 10.0 c A24
2007-12-18 01:28:26 C 03 48 14.25 +36 24 37.9 r 703
2007-12-18 01:36:25 C 03 48 13.71 +36 24 38.9 r 703
2007-12-18 01:44:19 C 03 48 13.06 +36 24 40.5 r 703
2007-12-18 01:52:15 C 03 48 12.38 +36 24 42.0 r 703
2007-12-18 04:36:35 C 03 47 59.21 +36 25 08.9 c 704
2007-12-18 04:55:19 C 03 47 57.65 +36 25 11.4 c 704
2007-12-18 05:14:36 C 03 47 56.07 +36 25 14.4 c 704
2007-12-18 05:33:36 C 03 47 54.58 +36 25 17.0 c 704
2007-12-18 05:52:51 C 03 47 53.07 +36 25 19.1 c 704
2008-01-13 03:21:57 C 03 10 03.21 +37 10 36.4 c 704
2008-01-13 03:40:34 C 03 10 02.52 +37 10 37.1 c 704
2008-01-13 04:00:15 C 03 10 01.69 +37 10 37.3 c 704
2008-01-13 04:18:53 C 03 10 00.94 +37 10 38.4 c 704
2009-08-30 18:41:55 C 03 53 32.99 -39 41 33.9 r E12
2009-12-05 11:55:43 C 01 41 26.14 -36 30 18.3 r E12
2010-11-05 06:58:20 C 04 21 17.90 +15 13 51.9 c 704
2010-11-05 07:16:26 C 04 21 16.95 +15 13 55.6 c 704
2010-11-05 07:34:33 C 04 21 15.87 +15 13 58.8 c 704
2010-11-05 07:53:00 C 04 21 14.91 +15 14 02.1 c 704
2010-11-05 08:11:02 C 04 21 13.90 +15 14 04.8 c 704
Radar Observations (22)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1976-05-18 05:56:50 225980 7 Hz 2380 -1 -1
1976-05-18.247801 22598000 100 Hz 2380 251 251
1976-05-19 05:52:16 186012.5 7 Hz 2380 -1 -1
1976-05-19.244630 18601250 100 Hz 2380 251 251
1989-05-23 12:00:00 501134 20 Hz 8495 -14 -14
1989-05-23.500000 50113400 2000 Hz 8495 253 253
1989-05-26 01:42:00 185537450 12 us 2380 -1 -1
1989-05-26.070833 18553745000 12000 us 2380 251 251
1989-05-28 01:38:00 185094484 12 us 2380 -1 -1
1989-05-28.068056 18509448400 12000 us 2380 251 251
1989-05-29 00:20:00 -72175 5 Hz 2380 -1 -1
1989-05-29.013889 -7217500 500 Hz 2380 251 251
2002-05-28.997222 23747341100 10000 us 2380 251 251
2002-05-30 01:10:00 237420023 2 us 2380 -1 -1
2002-05-30 01:10:00 -16023.93 1 Hz 2380 -1 -1
2002-05-30.048611 23742002300 2000 us 2380 251 251
2002-06-01 00:57:00 240888928 2 us 2380 -1 -1
2002-06-01 00:57:00 -80205.3478 1 Hz 2380 -1 -1
2002-06-01.039583 24088892800 2000 us 2380 251 251
2002-06-03 00:09:00 248731233 2 us 2380 -1 -1
2002-06-03 00:09:00 -138436.315 1 Hz 2380 -1 -1
2002-06-03.006250 24873123300 2000 us 2380 251 251
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)