P/2020 V3 (PANSTARRS)
메타데이터
| 항목 | 값 |
|---|---|
| Designation | P/2020 V3 (PANSTARRS) |
| Type | P |
| Perihelion (tp_cal, UTC) | 2021-02-07T14:40:49.393920Z |
| Orbit solution date (soln_date, UTC) | 2023-02-27T21:13:13Z |
| Obs used | 130 |
| NEO | - |
| M1 | 12.400 |
| K1 | 5.250 |
| PC | - |
| Discovery observation (MPC, UTC) | 2020-11-10T11:28:18.940800Z |
| Discovery magnitude (MPC) | 20.68 w |
| Discovery observatory (MPC) | F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 | 값 |
|---|---|
| Epoch (epoch_cal, TDB) | 2021-02-18.0000000 |
| e | 0.25487802 |
| q (au) | 6.230387 |
| a (au) | 8.361566 |
| i (deg) | 23.033098 |
| Ω (om, deg) | 198.286812 |
| ω (w, deg) | 249.240668 |
| M (ma, deg) | 0.423465 |
밝기
산란 + 전체 선형
$$ M_a = (4.202 + 5.745\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
모델 상수
| 항목 | 값 |
|---|---|
| H0 | 4.202 |
| n | 5.745 |
| gf | 0.999 |
| gb | -0.500 |
| k | 1.000 |
| δ90 | 10.000 |
| 파라미터 | 기호 | 범위 | 설명 |
|---|---|---|---|
| 태양·지구거리 1 AU에서의 절대등급 | H0 | -5 to 20 | 혜성의 고유 밝기 |
| 광도 기울기 파라미터 | n | 2 to 6 | 태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 | gf |
0.8 to 1 | 전방 산란의 강도 |
| 후방 산란 비대칭 계수 | gb |
-1 to -0.5 | 후방 산란의 강도 |
| 분할 계수 | k | 0.8 to 1 | 전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 | δ90 | 1 to 10 | 코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) | 끝 (UTC) | a | b |
|---|---|---|---|
| 2017-09-16 | 2021-02-03 | +49.6921 | -39.460 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
찾아보기
천체력
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-07-29 00:00 | 12:43:02.16 | -04:46:05.0 | HIP 61894 | 30.16 |
| 2026-07-29 12:00 | 12:43:11.53 | -04:46:36.6 | HIP 61971 | 32.10 |
| 2026-07-30 00:00 | 12:43:20.97 | -04:47:08.8 | HIP 62260 | 32.69 |
| 2026-07-30 12:00 | 12:43:30.49 | -04:47:41.5 | HIP 62260 | 30.30 |
| 2026-07-31 00:00 | 12:43:40.09 | -04:48:14.7 | HIP 62260 | 27.89 |
| 2026-07-31 12:00 | 12:43:49.75 | -04:48:48.4 | HIP 62260 | 25.48 |
| 2026-08-01 00:00 | 12:43:59.49 | -04:49:22.6 | HIP 62260 | 23.07 |
| 2026-08-01 12:00 | 12:44:09.31 | -04:49:57.3 | HIP 62260 | 20.65 |
| 2026-08-02 00:00 | 12:44:19.20 | -04:50:32.6 | HIP 62260 | 18.24 |
| 2026-08-02 12:00 | 12:44:29.15 | -04:51:08.3 | HIP 62260 | 15.86 |
| 2026-08-03 00:00 | 12:44:39.19 | -04:51:44.5 | HIP 62260 | 13.52 |
| 2026-08-03 12:00 | 12:44:49.29 | -04:52:21.2 | HIP 62260 | 11.27 |
| 2026-08-04 00:00 | 12:44:59.46 | -04:52:58.4 | HIP 62260 | 9.19 |
| 2026-08-04 12:00 | 12:45:09.71 | -04:53:36.1 | HIP 62260 | 7.44 |
| 2026-08-05 00:00 | 12:45:20.02 | -04:54:14.2 | HIP 62260 | 6.33 |
| 2026-08-05 12:00 | 12:45:30.40 | -04:54:52.8 | HIP 62260 | 6.24 |
| 2026-08-06 00:00 | 12:45:40.86 | -04:55:32.0 | HIP 62260 | 7.22 |
| 2026-08-06 12:00 | 12:45:51.38 | -04:56:11.5 | HIP 62260 | 8.94 |
| 2026-08-07 00:00 | 12:46:01.97 | -04:56:51.6 | HIP 62260 | 11.08 |
| 2026-08-07 12:00 | 12:46:12.63 | -04:57:32.1 | HIP 62260 | 13.46 |
| 2026-08-08 00:00 | 12:46:23.36 | -04:58:13.1 | HIP 62260 | 15.96 |
| 2026-08-08 12:00 | 12:46:34.15 | -04:58:54.5 | HIP 62260 | 18.56 |
| 2026-08-09 00:00 | 12:46:45.01 | -04:59:36.4 | HIP 62250 | 21.15 |
| 2026-08-09 12:00 | 12:46:55.94 | -05:00:18.7 | HIP 62422 | 21.64 |
| 2026-08-10 00:00 | 12:47:06.94 | -05:01:01.5 | HIP 62422 | 21.26 |
| 2026-08-10 12:00 | 12:47:18.00 | -05:01:44.7 | HIP 62422 | 21.26 |
| 2026-08-11 00:00 | 12:47:29.12 | -05:02:28.4 | HIP 62422 | 21.64 |
| 2026-08-11 12:00 | 12:47:40.31 | -05:03:12.5 | HIP 62422 | 22.39 |
| 2026-08-12 00:00 | 12:47:51.56 | -05:03:57.0 | HIP 62422 | 23.48 |
| 2026-08-12 12:00 | 12:48:02.88 | -05:04:42.0 | HIP 62422 | 24.88 |
| 2026-08-13 00:00 | 12:48:14.26 | -05:05:27.4 | HIP 62565 | 25.25 |
| 2026-08-13 12:00 | 12:48:25.71 | -05:06:13.2 | HIP 62565 | 23.15 |
| 2026-08-14 00:00 | 12:48:37.21 | -05:06:59.4 | HIP 62565 | 21.25 |
| 2026-08-14 12:00 | 12:48:48.78 | -05:07:46.1 | HIP 62565 | 19.59 |
| 2026-08-15 00:00 | 12:49:00.41 | -05:08:33.1 | HIP 62565 | 18.27 |
| 2026-08-15 12:00 | 12:49:12.09 | -05:09:20.6 | HIP 62565 | 17.37 |
| 2026-08-16 00:00 | 12:49:23.84 | -05:10:08.4 | HIP 62565 | 16.96 |
| 2026-08-16 12:00 | 12:49:35.65 | -05:10:56.6 | HIP 62565 | 17.08 |
| 2026-08-17 00:00 | 12:49:47.52 | -05:11:45.3 | HIP 62693 | 17.39 |
| 2026-08-17 12:00 | 12:49:59.44 | -05:12:34.3 | HIP 62693 | 15.42 |
| 2026-08-18 00:00 | 12:50:11.42 | -05:13:23.7 | HIP 62693 | 13.86 |
| 2026-08-18 12:00 | 12:50:23.46 | -05:14:13.5 | HIP 62693 | 12.87 |
| 2026-08-19 00:00 | 12:50:35.56 | -05:15:03.6 | HIP 62693 | 12.58 |