P/2024 T2 (Rankin)
메타데이터
| 항목 | 값 |
|---|---|
| Designation | P/2024 T2 (Rankin) |
| Type | P |
| Perihelion (tp_cal, UTC) | 2024-12-08T08:20:48.166080Z |
| Orbit solution date (soln_date, UTC) | 2025-05-08T09:42:27Z |
| Obs used | 437 |
| NEO | - |
| M1 | 16.200 |
| K1 | 4.500 |
| PC | - |
| Discovery observation (MPC, UTC) | 2024-10-04T10:26:09.830400Z |
| Discovery magnitude (MPC) | 21.17 G |
| Discovery observatory (MPC) | G96 · Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 | 값 |
|---|---|
| Epoch (epoch_cal, TDB) | 2025-01-16.0000000 |
| e | 0.68065051 |
| q (au) | 1.972296 |
| a (au) | 6.175980 |
| i (deg) | 12.928498 |
| Ω (om, deg) | 113.060603 |
| ω (w, deg) | 343.832427 |
| M (ma, deg) | 2.482102 |
밝기
산란 + 전체 선형
$$ M_a = (17.486 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
모델 상수
| 항목 | 값 |
|---|---|
| H0 | 17.486 |
| n | 2.000 |
| gf | 1.000 |
| gb | -0.621 |
| k | 0.800 |
| 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 |
|---|---|---|---|
| 2024-12-09 | 2025-05-02 | -16.3623 | +5.017 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
찾아보기
천체력
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-02-03 00:00 | 14:40:53.76 | -01:19:21.9 | HIP 71829 | 11.25 |
| 2026-02-03 12:00 | 14:41:02.76 | -01:18:27.3 | HIP 71829 | 9.60 |
| 2026-02-04 00:00 | 14:41:11.53 | -01:17:31.4 | HIP 71829 | 8.40 |
| 2026-02-04 12:00 | 14:41:20.08 | -01:16:34.3 | HIP 71829 | 7.81 |
| 2026-02-05 00:00 | 14:41:28.39 | -01:15:36.0 | HIP 71829 | 7.93 |
| 2026-02-05 12:00 | 14:41:36.48 | -01:14:36.4 | HIP 71829 | 8.70 |
| 2026-02-06 00:00 | 14:41:44.33 | -01:13:35.5 | HIP 71829 | 9.94 |
| 2026-02-06 12:00 | 14:41:51.95 | -01:12:33.5 | HIP 71829 | 11.47 |
| 2026-02-07 00:00 | 14:41:59.34 | -01:11:30.2 | HIP 71829 | 13.17 |
| 2026-02-07 12:00 | 14:42:06.50 | -01:10:25.6 | HIP 71829 | 14.98 |
| 2026-02-08 00:00 | 14:42:13.42 | -01:09:19.9 | HIP 71829 | 16.83 |
| 2026-02-08 12:00 | 14:42:20.11 | -01:08:12.9 | HIP 71829 | 18.70 |
| 2026-02-09 00:00 | 14:42:26.56 | -01:07:04.8 | HIP 71829 | 20.58 |
| 2026-02-09 12:00 | 14:42:32.77 | -01:05:55.4 | HIP 71829 | 22.45 |
| 2026-02-10 00:00 | 14:42:38.75 | -01:04:44.9 | HIP 71829 | 24.31 |
| 2026-02-10 12:00 | 14:42:44.49 | -01:03:33.1 | HIP 71829 | 26.15 |
| 2026-02-11 00:00 | 14:42:49.99 | -01:02:20.2 | HIP 71869 | 26.46 |
| 2026-02-11 12:00 | 14:42:55.25 | -01:01:06.1 | HIP 71869 | 26.06 |
| 2026-02-12 00:00 | 14:43:00.27 | -00:59:50.9 | HIP 71869 | 25.73 |
| 2026-02-12 12:00 | 14:43:05.05 | -00:58:34.4 | HIP 71869 | 25.47 |
| 2026-02-13 00:00 | 14:43:09.59 | -00:57:16.9 | HIP 71869 | 25.27 |
| 2026-02-13 12:00 | 14:43:13.89 | -00:55:58.2 | HIP 71869 | 25.13 |
| 2026-02-14 00:00 | 14:43:17.95 | -00:54:38.3 | HIP 71869 | 25.05 |
| 2026-02-14 12:00 | 14:43:21.76 | -00:53:17.3 | HIP 71869 | 25.01 |
| 2026-02-15 00:00 | 14:43:25.34 | -00:51:55.3 | HIP 71869 | 25.02 |
| 2026-02-15 12:00 | 14:43:28.66 | -00:50:32.1 | HIP 71869 | 25.08 |
| 2026-02-16 00:00 | 14:43:31.75 | -00:49:07.8 | HIP 71869 | 25.18 |
| 2026-02-16 12:00 | 14:43:34.59 | -00:47:42.4 | HIP 71869 | 25.31 |
| 2026-02-17 00:00 | 14:43:37.19 | -00:46:15.9 | HIP 71869 | 25.48 |
| 2026-02-17 12:00 | 14:43:39.54 | -00:44:48.4 | HIP 71869 | 25.68 |
| 2026-02-18 00:00 | 14:43:41.65 | -00:43:19.8 | HIP 71869 | 25.91 |
| 2026-02-18 12:00 | 14:43:43.51 | -00:41:50.2 | HIP 71869 | 26.17 |
| 2026-02-19 00:00 | 14:43:45.13 | -00:40:19.5 | HIP 71869 | 26.46 |
| 2026-02-19 12:00 | 14:43:46.50 | -00:38:47.8 | HIP 71869 | 26.78 |
| 2026-02-20 00:00 | 14:43:47.63 | -00:37:15.1 | HIP 71869 | 27.12 |
| 2026-02-20 12:00 | 14:43:48.51 | -00:35:41.4 | HIP 71869 | 27.49 |
| 2026-02-21 00:00 | 14:43:49.15 | -00:34:06.7 | HIP 71869 | 27.89 |
| 2026-02-21 12:00 | 14:43:49.54 | -00:32:31.0 | HIP 71869 | 28.31 |
| 2026-02-22 00:00 | 14:43:49.69 | -00:30:54.4 | HIP 72165 | 28.43 |
| 2026-02-22 12:00 | 14:43:49.60 | -00:29:16.8 | HIP 72165 | 27.98 |
| 2026-02-23 00:00 | 14:43:49.26 | -00:27:38.3 | HIP 72165 | 27.68 |
| 2026-02-23 12:00 | 14:43:48.67 | -00:25:58.9 | HIP 72165 | 27.53 |
| 2026-02-24 00:00 | 14:43:47.84 | -00:24:18.6 | HIP 72014 | 27.17 |