Table 2.
Astrometry.
| Date (UTC) | α (hh:mm:ss.sss) | δ (dd mm ss.ss) | λ (∘) | β (∘) | l (∘) | b (∘) | ΔRA (”) | ΔDec (”) | G | MPC Code | Elong. (∘) | Phase (∘) | Airmass | Seeing (”) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2012-12-23.625791 | 12:58:16.435 | −16 01 49.48 | 200 | −9 | 305 | 47 | 0.112 | 0.100 | 21.32 | F51 | 72.6 | 69.7 | 1.5 | 1.1 |
| 2014-11-04.369318 | 09:30:14.113 | −00 38 50.31 | 145 | −15 | 234 | 34 | 0.12 | 0.12 | 22.1 | W84 | 77.0 | 49.6 | 1.4 | 1.2 |
| 2014-12-10.656600 | 11:42:30.865 | −11 45 23.20 | 181 | −13 | 277 | 48 | 0.122 | 0.129 | 22.09 | F51 | 77.9 | 62.0 | 1.2 | 0.9 |
| 2014-12-11.657942 | 11:47:17.980 | −12 05 29.58 | 182 | −12 | 279 | 48 | 0.070 | 0.141 | 22.57 | F51 | 77.6 | 62.5 | 1.2 | 1.0 |
| 2014-12-30.644316 | 13:36:45.039 | −17 50 34.15 | 209 | −7 | 318 | 44 | 0.485 | 0.100 | 20.97 | F51 | 69.9 | 73.8 | 1.5 | 1.7 |
| 2014-12-30.647599 | 13:36:46.373 | −17 50 37.07 | 209 | −7 | 318 | 44 | 0.282 | 0.111 | 21.43 | F51 | 69.9 | 73.8 | 1.5 | 1.7 |
| 2014-12-30.650895 | 13:36:47.664 | −17 50 39.97 | 209 | −7 | 318 | 44 | 0.321 | 0.194 | 21.08 | F51 | 69.9 | 73.8 | 1.5 | 1.7 |
| 2014-12-30.654178 | 13:36:48.984 | −17 50 42.77 | 209 | −7 | 318 | 44 | 0.323 | 0.084 | 21.17 | F51 | 69.9 | 73.8 | 1.5 | 1.7 |
| 2015-01-01.641762 | 13:50:24.755 | −18 17 27.09 | 212 | −6 | 322 | 42 | 0.156 | 0.127 | 21.37 | F51 | 68.7 | 75.1 | 1.6 | 2.0 |
| 2015-01-01.646383 | 13:50:26.660 | −18 17 30.71 | 212 | −6 | 322 | 42 | 0.765 | 0.219 | 21.03 | F51 | 68.7 | 75.1 | 1.5 | 2.0 |
| 2015-01-01.651037 | 13:50:28.563 | −18 17 34.30 | 212 | −6 | 322 | 42 | 0.249 | 0.163 | 21.38 | F51 | 68.7 | 75.1 | 1.5 | 2.0 |
| 2015-01-01.655680 | 13:50:30.493 | −18 17 37.92 | 212 | −6 | 322 | 42 | 0.160 | 0.224 | 21.41 | F51 | 68.7 | 75.1 | 1.5 | 2.0 |
| 2017-10-24.497090 | 08:57:38.428 | +01 59 16.79 | 136 | −15 | 227 | 29 | 1.0 | 1.0 | 22.3 | G96 | 75.3 | 47.3 | 1.4 | 4.0 |
| 2019-10-27.508268 | 09:02:45.663 | +01 22 05.46 | 138 | −15 | 228 | 30 | 1.0 | 1.0 | 21.5 | G96 | 76.3 | 47.8 | 1.3 | 2.6 |
| 2021-02-09.256526 | 18:25:55.70 | −15 54 21.1 | 276 | 7 | 16 | −2 | 0.8 | 0.8 | — | J04 | 44.6 | 88.6 | 3.6 | 2.5 |
| 2021-02-09.267424 | 18:25:59.81 | −15 54 11.4 | 276 | 7 | 16 | −2 | 0.8 | 0.8 | — | J04 | 44.6 | 88.6 | 3.1 | 2.5 |
| 2021-02-09.278810 | 18:26:04.09 | −15 54 00.0 | 276 | 7 | 16 | −2 | 0.8 | 0.8 | — | J04 | 44.6 | 88.6 | 2.7 | 2.5 |
| 2021-02-22.533309 | 19:44:25.728 | −12 28 24.00 | 296 | 9 | 28 | −17 | 0.246 | 0.248 | 21.2 | G37 | 38.9 | 79.6 | 4.2 | 2.9 |
| 2021-02-22.536635 | 19:44:26.820 | −12 28 20.97 | 296 | 9 | 28 | −17 | 0.235 | 0.229 | 21.2 | G37 | 38.9 | 79.6 | 3.9 | 2.8 |
| 2021-03-09.397932 | 21:03:34.235 | −08 47 40.59 | 316 | 8 | 40 | −33 | 0.094 | 0.066 | 21.8 | I33 | 33.8 | 63.8 | 3.6 | 0.9 |
| 2021-03-09.400223 | 21:03:34.940 | −08 47 38.44 | 316 | 8 | 40 | −33 | 0.087 | 0.079 | 21.8 | I33 | 33.8 | 63.8 | 3.5 | 0.8 |
| 2021-03-09.403063 | 21:03:35.789 | −08 47 35.95 | 316 | 8 | 40 | −33 | 0.155 | 0.137 | 21.2 | I33 | 33.8 | 63.8 | 3.3 | 1.4 |
| 2021-03-09.405788 | 21:03:36.626 | −08 47 33.57 | 316 | 8 | 40 | −33 | 0.102 | 0.072 | 21.5 | I33 | 33.8 | 63.8 | 3.1 | 1.0 |
| 2021-03-14.408157 | 21:28:45.981 | −07 33 20.58 | 322 | 7 | 45 | −38 | 0.133 | 0.128 | — | I33 | 32.3 | 58.3 | 3.3 | 1.6 |
| 2021-03-17.409321 | 21:43:29.790 | −06 48 26.91 | 326 | 6 | 49 | −41 | 0.5 | 0.5 | — | I33 | 31.5 | 55.2 | 3.4 | 1.0 |
Astrometric measurements of 2020 XL5 from precovery archival data and follow-up at the discovery apparition. The table presents the astrometric measurements, their 1σ uncertainties in both coordinates, and the Gaia G magnitude for each measurement, followed by the MPC code of the station from which it has been obtained. The remaining columns present the observability circumstances at the time of each observation.