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
2020-10-13 10:26:50 C 05 18 19.29 +25 50 49.3 V G96
2020-10-13 10:33:43 C 05 18 19.20 +25 50 52.7 V G96
2020-10-13 10:40:35 C 05 18 19.00 +25 50 54.9 V G96
2020-10-19 11:57:44 C 05 15 04.17 +26 45 30.8 V T08
2020-10-19 12:06:23 C 05 15 03.94 +26 45 34.4 V T08
2020-10-19 12:09:02 C 05 15 03.83 +26 45 35.0 V T08
2020-10-19 12:23:18 C 05 15 03.45 +26 45 41.5 V T08
2020-10-21 09:09:50 C 05 13 47.78 +27 02 59.8 U I41
2020-10-21 10:53:41 C 05 13 44.60 +27 03 40.4 U I41
2020-10-23 09:08:45 C 05 12 18.28 +27 21 47.9 U I41
2020-10-23 10:14:32 C 05 12 16.06 +27 22 14.0 U I41
2020-10-25 14:04:59 C 05 10 29.21 +27 42 48.1 V T05
2020-10-25 14:09:50 C 05 10 29.02 +27 42 50.8 V T05
2020-10-25 14:17:55 C 05 10 28.74 +27 42 53.4 V T05
2020-10-25 15:06:23 C 05 10 26.95 +27 43 12.8 V T05
2020-10-27 09:28:44 C 05 08 51.97 +28 00 09.7 V G96
2020-10-27 09:36:10 C 05 08 51.72 +28 00 13.0 V G96
2020-10-27 09:43:37 C 05 08 51.37 +28 00 15.9 V G96
2020-10-27 09:51:04 C 05 08 51.08 +28 00 18.9 V G96
2020-11-08 19:07:04 C 04 54 25.87 +30 00 54.9 q D29
2020-11-08 19:28:42 C 04 54 24.59 +30 01 03.2 q D29
2020-11-08 19:50:20 C 04 54 23.31 +30 01 12.0 q D29
2020-11-17 03:05:04 C 04 41 38.30 +31 19 12.1 V W33
2020-11-17 03:11:17 C 04 41 37.84 +31 19 14.3 V W33
2020-11-17 03:17:30 C 04 41 37.42 +31 19 16.9 V W33
2020-11-21 00:23:58 C 04 34 56.20 +31 53 25.8 V 130
2020-11-21 00:26:51 C 04 34 56.04 +31 53 26.3 V 130
2020-11-21 00:29:43 C 04 34 55.83 +31 53 27.5 V 130
2020-11-22 07:11:03 C 04 32 38.75 +32 04 17.1 V G96
2020-11-22 07:18:22 C 04 32 38.20 +32 04 20.0 V G96
2020-11-22 07:25:41 C 04 32 37.63 +32 04 22.6 V G96
2020-11-22 07:33:01 C 04 32 37.07 +32 04 25.3 V G96
2020-11-24 06:45:58 C 04 29 01.80 +32 20 34.2 V 703
2020-11-24 06:54:32 C 04 29 01.20 +32 20 36.6 V 703
2020-11-24 07:03:07 C 04 29 00.57 +32 20 40.7 V 703
2020-11-24 07:11:43 C 04 28 59.84 +32 20 44.0 V 703
2020-11-26 10:51:43 C 04 24 59.08 +32 37 41.1 V T05
2020-11-26 10:56:24 C 04 24 58.70 +32 37 42.5 V T05
2020-11-26 11:04:08 C 04 24 58.05 +32 37 45.5 V T05
2020-11-26 11:55:17 C 04 24 53.99 +32 38 01.0 V T05
2020-12-03 11:00:53 C 04 11 30.59 +33 26 57.7 V T08
2020-12-03 11:05:32 C 04 11 30.27 +33 26 59.4 V T08
2020-12-03 11:14:56 C 04 11 29.46 +33 27 01.4 V T08
2020-12-03 11:29:31 C 04 11 28.30 +33 27 04.3 V T08
2020-12-04 10:32:53 C 04 09 35.73 +33 33 02.7 V G96
2020-12-04 10:40:14 C 04 09 35.13 +33 33 04.8 V G96
2020-12-04 10:47:34 C 04 09 34.54 +33 33 07.2 V G96
2020-12-04 10:54:55 C 04 09 33.92 +33 33 08.4 V G96
2020-12-06 09:38:58 C 04 05 46.11 +33 44 43.7 V T08
2020-12-06 09:50:17 C 04 05 45.20 +33 44 46.8 V T08
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)