C/2022 T1 (Lemmon)
메타데이터
| 항목 | 값 |
|---|---|
| Designation | C/2022 T1 (Lemmon) |
| Type | C |
| Perihelion (tp_cal, UTC) | 2024-02-17T12:18:13.901760Z |
| Orbit solution date (soln_date, UTC) | 2024-07-22T18:42:14Z |
| Obs used | 587 |
| NEO | - |
| M1 | 13.100 |
| K1 | 4.500 |
| PC | - |
| Discovery observation (MPC, UTC) | 2022-10-03T11:55:57.561600Z |
| Discovery magnitude (MPC) | 21.24 G |
| Discovery observatory (MPC) | G96 · Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 | 값 |
|---|---|
| Epoch (epoch_cal, TDB) | 2023-10-10.0000000 |
| e | 0.99971338 |
| q (au) | 3.444855 |
| a (au) | 12018.953434 |
| i (deg) | 22.543649 |
| Ω (om, deg) | 236.919592 |
| ω (w, deg) | 324.316453 |
| M (ma, deg) | 359.999902 |
밝기
산란 + 전체 선형
$$ M_a = (11.928 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
모델 상수
| 항목 | 값 |
|---|---|
| H0 | 11.928 |
| n | 2.000 |
| gf | 0.990 |
| gb | -0.786 |
| k | 1.000 |
| δ90 | 9.978 |
| 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 |
|---|---|---|---|
| 2022-10-03 | 2023-01-17 | +12.9255 | -9.332 |
| 2023-01-17 | 2023-05-12 | +7.4344 | -5.338 |
| 2023-05-12 | 2024-02-14 | -1.8399 | +0.708 |
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 | 19:28:15.63 | -05:27:20.3 | HIP 95698 | 38.72 |
| 2026-02-03 12:00 | 19:28:34.51 | -05:25:51.4 | HIP 95698 | 38.27 |
| 2026-02-04 00:00 | 19:28:53.34 | -05:24:22.0 | HIP 95698 | 38.45 |
| 2026-02-04 12:00 | 19:29:12.11 | -05:22:52.1 | HIP 95698 | 39.23 |
| 2026-02-05 00:00 | 19:29:30.82 | -05:21:21.9 | HIP 95698 | 40.59 |
| 2026-02-05 12:00 | 19:29:49.47 | -05:19:51.2 | HIP 95698 | 42.45 |
| 2026-02-06 00:00 | 19:30:08.06 | -05:18:20.1 | HIP 96116 | 44.39 |
| 2026-02-06 12:00 | 19:30:26.59 | -05:16:48.6 | HIP 96116 | 39.77 |
| 2026-02-07 00:00 | 19:30:45.07 | -05:15:16.7 | HIP 96116 | 35.22 |
| 2026-02-07 12:00 | 19:31:03.48 | -05:13:44.4 | HIP 96116 | 30.78 |
| 2026-02-08 00:00 | 19:31:21.83 | -05:12:11.7 | HIP 96116 | 26.47 |
| 2026-02-08 12:00 | 19:31:40.12 | -05:10:38.6 | HIP 96116 | 22.39 |
| 2026-02-09 00:00 | 19:31:58.35 | -05:09:05.0 | HIP 96116 | 18.65 |
| 2026-02-09 12:00 | 19:32:16.51 | -05:07:31.1 | HIP 96116 | 15.51 |
| 2026-02-10 00:00 | 19:32:34.61 | -05:05:56.8 | HIP 96116 | 13.37 |
| 2026-02-10 12:00 | 19:32:52.65 | -05:04:22.1 | HIP 96116 | 12.74 |
| 2026-02-11 00:00 | 19:33:10.62 | -05:02:47.0 | HIP 96116 | 13.82 |
| 2026-02-11 12:00 | 19:33:28.53 | -05:01:11.6 | HIP 96116 | 16.25 |
| 2026-02-12 00:00 | 19:33:46.36 | -04:59:35.7 | HIP 96202 | 15.10 |
| 2026-02-12 12:00 | 19:34:04.14 | -04:57:59.5 | HIP 96202 | 14.43 |
| 2026-02-13 00:00 | 19:34:21.84 | -04:56:22.9 | HIP 96202 | 15.24 |
| 2026-02-13 12:00 | 19:34:39.48 | -04:54:45.9 | HIP 96202 | 17.31 |
| 2026-02-14 00:00 | 19:34:57.04 | -04:53:08.6 | HIP 96202 | 20.26 |
| 2026-02-14 12:00 | 19:35:14.54 | -04:51:30.9 | HIP 96451 | 20.49 |
| 2026-02-15 00:00 | 19:35:31.96 | -04:49:52.8 | HIP 96451 | 15.89 |
| 2026-02-15 12:00 | 19:35:49.32 | -04:48:14.4 | HIP 96451 | 11.32 |
| 2026-02-16 00:00 | 19:36:06.60 | -04:46:35.6 | HIP 96451 | 6.85 |
| 2026-02-16 12:00 | 19:36:23.81 | -04:44:56.5 | HIP 96451 | 2.90 |
| 2026-02-17 00:00 | 19:36:40.95 | -04:43:17.1 | HIP 96451 | 3.47 |
| 2026-02-17 12:00 | 19:36:58.02 | -04:41:37.3 | HIP 96451 | 7.58 |
| 2026-02-18 00:00 | 19:37:15.01 | -04:39:57.1 | HIP 96556 | 8.11 |
| 2026-02-18 12:00 | 19:37:31.92 | -04:38:16.7 | HIP 96556 | 3.86 |
| 2026-02-19 00:00 | 19:37:48.76 | -04:36:35.9 | HIP 96556 | 2.28 |
| 2026-02-19 12:00 | 19:38:05.52 | -04:34:54.7 | HIP 96584 | 1.63 |
| 2026-02-20 00:00 | 19:38:22.21 | -04:33:13.3 | HIP 96584 | 5.60 |
| 2026-02-20 12:00 | 19:38:38.82 | -04:31:31.6 | HIP 96584 | 10.01 |
| 2026-02-21 00:00 | 19:38:55.35 | -04:29:49.5 | HIP 96584 | 14.44 |
| 2026-02-21 12:00 | 19:39:11.80 | -04:28:07.1 | HIP 96584 | 18.87 |
| 2026-02-22 00:00 | 19:39:28.17 | -04:26:24.4 | HIP 96584 | 23.28 |
| 2026-02-22 12:00 | 19:39:44.46 | -04:24:41.5 | HIP 96811 | 27.21 |
| 2026-02-23 00:00 | 19:40:00.67 | -04:22:58.2 | HIP 96811 | 23.67 |
| 2026-02-23 12:00 | 19:40:16.80 | -04:21:14.6 | HIP 96811 | 20.46 |
| 2026-02-24 00:00 | 19:40:32.85 | -04:19:30.8 | HIP 96811 | 17.76 |