2063 Bacchus (1977 HB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3494289066 ± 2.00e+00
Semi-major axis (a)1.0779986113 AU ± 3.00e+00
Inclination (i)9.43469494° ± 4.00e+00
Long. of Asc. Node (Ω)33.03636030° ± 5.00e+00
Arg. of Perihelion (ω)55.35066867° ± 6.00e+00
Mean Anomaly (M)234.78705685° ± 2.00e-05
Mean Motion (n)0.8806127601°/day ± 3.68e+00
Perihelion dist (q)0.70131474 AU ± 2.91e+00
Aphelion dist (Q)1.45468249 AU ± 4.59e+00
Orbital Period1.11925051 yr ± 4.67e+00
NGA Modelr2
A2-3.62707582e-06 AU/d²
Physical Parameters
H (abs. magnitude)17.21
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.501″
Uncertainty0
Orbit TypeApollo
MOID0.067153 AU
Observations Used1463
Radar Obs Used7
Gaia Obs Used54
Oppositions4
Arc Total1977-2025
First Observation Used1977-04-24
Last Observation Used2025-06-15
Observations (1537)
Date Type RA Dec Mag Band Observatory
2024-03-31 19:36:32 C 16 51 40.11 +02 33 26.4 v 323
2024-03-31 19:48:02 C 16 51 35.73 +02 33 00.5 v 323
2024-03-31 19:48:03 C 16 51 35.73 +02 33 00.4 q 323
2024-03-31 19:48:17 C 16 51 35.63 +02 33 00.2 v 323
2024-03-31 19:59:34 C 16 51 31.33 +02 32 34.4 q 323
2024-03-31 19:59:34 C 16 51 31.31 +02 32 35.1 v 323
2024-03-31 20:00:31 C 16 51 31.00 +02 32 32.1 q 323
2024-03-31 20:00:31 C 16 51 30.91 +02 32 32.7 v 323
2024-04-01 00:10:03 C 16 50 02.306 +02 23 01.46 V M22
2024-04-01 00:40:50 C 16 49 50.654 +02 21 51.34 V M22
2024-04-01 00:43:27 C 16 49 49.658 +02 21 45.40 V M22
2024-04-01 00:48:41 C 16 49 47.683 +02 21 33.55 V M22
2024-04-03 18:01:03 C 16 25 57.49 -00 07 14.1 u 323
2024-04-03 18:12:14 C 16 25 53.27 -00 07 39.0 u 323
2024-04-04 22:00:44 C 16 15 43.05 -01 11 50.5 q 168
2024-04-04 22:24:52 C 16 15 33.97 -01 12 44.3 q 168
2024-04-04 22:48:57 C 16 15 24.92 -01 13 38.0 q 168
2024-04-04 23:25:52 C 16 15 11.04 -01 15 00.4 q 168
2024-04-04 23:58:00 C 16 14 58.97 -01 16 12.0 q 168
2024-04-05 18:12:08 C 16 08 22.92 -01 54 57.5 u 323
2024-04-05 18:23:01 C 16 08 18.84 -01 55 21.2 u 323
2024-04-06 16:30:23 C 16 00 21.00 -02 43 32.4 V P14
2024-04-06 16:37:04 C 16 00 18.51 -02 43 46.8 V P14
2024-04-06 16:43:58 C 16 00 15.92 -02 44 01.4 V P14
2024-04-06 16:50:40 C 16 00 13.40 -02 44 16.2 V P14
2024-04-06 16:57:07 C 16 00 10.98 -02 44 30.2 V P14
2024-04-06 17:03:40 C 16 00 08.52 -02 44 44.4 V P14
2024-04-07 11:39:17 C 15 53 25.541 -03 25 39.07 V G96
2024-04-07 11:45:21 C 15 53 23.284 -03 25 51.85 V G96
2024-04-07 11:51:24 C 15 53 21.034 -03 26 04.56 V G96
2024-04-07 11:57:28 C 15 53 18.766 -03 26 17.38 V G96
2024-04-08 21:55:24 B 15 41 23.48 -04 36 42.7 X L99
2024-04-08 21:56:34 B 15 41 23.10 -04 36 45.9 X L99
2024-04-08 21:57:39 B 15 41 22.65 -04 36 48.3 X L99
2024-04-09 01:42:45 C 15 40 01.79 -04 44 21.1 M32
2024-04-09 01:46:52 C 15 40 00.30 -04 44 29.6 M32
2024-04-09 01:51:35 C 15 39 58.60 -04 44 38.9 M32
2024-04-09 01:55:43 C 15 39 57.10 -04 44 47.2 M32
2024-04-09 01:59:50 C 15 39 55.63 -04 44 55.4 M32
2024-04-09 22:58:52 C 15 32 43.46 -05 26 23.7 M32
2024-04-09 23:02:36 C 15 32 42.12 -05 26 31.1 M32
2024-04-09 23:06:19 C 15 32 40.81 -05 26 38.2 M32
2024-04-09 23:10:03 C 15 32 39.49 -05 26 45.6 M32
2024-04-09 23:13:48 C 15 32 38.17 -05 26 52.9 M32
2024-04-09 23:16:54 C 15 32 37.07 -05 26 59.0 M32
2024-04-10 10:21:39 C 15 28 49.055 -05 48 06.08 V 703
2024-04-10 10:24:56 C 15 28 47.881 -05 48 12.02 V 703
2024-04-10 10:28:12 C 15 28 46.729 -05 48 18.29 V 703
2024-04-10 10:31:28 C 15 28 45.570 -05 48 24.41 V 703
2024-04-10 17:01:28 C 15 26 36.17 -05 59 33.4 u 323
Radar Observations (19)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1996-03-22 18:00:00 384093.223 2.3 Hz 8510 -14 -14
1996-03-22 20:10:00 87190665 15 us 8510 -14 -14
1996-03-22 22:50:00 86769151 2 us 8510 -14 -14
1996-03-22 22:50:00 371573.7 2 Hz 8510 -14 -14
1996-03-22.750000 38409322 200 Hz 8510 253 253
1996-03-22.840278 8719066500 15000 us 8510 253 253
1996-03-22.951389 8676915100 2000 us 8510 253 253
1996-03-24 17:50:00 324347 2 Hz 8510 -14 -14
1996-03-24 22:10:00 79673366 1 us 8510 -14 -14
1996-03-24 23:00:00 79562896 10 us 8510 -14 -14
1996-03-24.743056 32434700 200 Hz 8510 253 253
1996-03-24.923611 7967336600 1000 us 8510 253 253
1996-03-24.958333 7956289600 10000 us 8510 253 253
1996-03-29 19:30:00 96363 2 Hz 8510 -14 -14
1996-03-29.812500 9636300 200 Hz 8510 253 253
2012-09-13 11:31:00 -76858.4372 0.3 Hz 2380 -1 -1
2012-09-13 12:27:00 248520536.79 4 us 2380 -1 -1
2012-09-14 12:21:00 251520636.56 4 us 2380 -1 -1
2015-04-18 23:59:00 217913625.88 4 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)