C/1982 M1 (Austin)
메타데이터
| 항목 | 값 |
|---|---|
| Designation | C/1982 M1 (Austin) |
| Type | C |
| Perihelion (tp_cal, UTC) | 1982-08-24T17:30:18.077760Z |
| Orbit solution date (soln_date, UTC) | 2021-04-15T23:29:29Z |
| Obs used | 290 |
| NEO | - |
| M1 | 9.000 |
| K1 | 15.250 |
| PC | 0.030 |
Osculating 궤도요소
| 항목 | 값 |
|---|---|
| Epoch (epoch_cal, TDB) | 1982-09-05.0000000 |
| e | 0.99939617 |
| q (au) | 0.647812 |
| a (au) | 1072.840846 |
| i (deg) | 84.494983 |
| Ω (om, deg) | 326.262542 |
| ω (w, deg) | 33.822836 |
| M (ma, deg) | 0.000316 |
밝기
산란 + 전체 선형
$$ M_a = (7.940 + 3.398\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
모델 상수
| 항목 | 값 |
|---|---|
| H0 | 7.940 |
| n | 3.398 |
| gf | 0.800 |
| gb | -0.593 |
| k | 0.800 |
| δ90 | 1.000 |
| 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 |
|---|---|---|---|
| 1982-06-18 | 1982-07-10 | +7.1779 | -0.282 |
| 1982-07-10 | 1982-08-06 | -6.0580 | -0.022 |
| 1982-08-06 | 1982-08-24 | +9.1335 | +2.617 |
| 1982-08-24 | 1982-09-21 | -3.8504 | -0.772 |
| 1982-09-21 | 1982-11-21 | +4.2710 | -0.227 |
| 1982-11-21 | 1982-12-12 | +0.3535 | +0.678 |
| 1982-12-12 | 1983-04-02 | +19.3741 | -5.514 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-02-03 00:00 | 09:32:08.62 | -09:44:15.8 | HIP 46728 | 17.74 |
| 2026-02-03 12:00 | 09:32:06.92 | -09:44:09.9 | HIP 46728 | 17.60 |
| 2026-02-04 00:00 | 09:32:05.22 | -09:44:03.9 | HIP 46728 | 17.47 |
| 2026-02-04 12:00 | 09:32:03.51 | -09:43:57.8 | HIP 46728 | 17.36 |
| 2026-02-05 00:00 | 09:32:01.80 | -09:43:51.6 | HIP 46728 | 17.25 |
| 2026-02-05 12:00 | 09:32:00.10 | -09:43:45.3 | HIP 46728 | 17.16 |
| 2026-02-06 00:00 | 09:31:58.39 | -09:43:38.9 | HIP 46728 | 17.08 |
| 2026-02-06 12:00 | 09:31:56.68 | -09:43:32.4 | HIP 46728 | 17.01 |
| 2026-02-07 00:00 | 09:31:54.97 | -09:43:25.8 | HIP 46728 | 16.95 |
| 2026-02-07 12:00 | 09:31:53.26 | -09:43:19.0 | HIP 46728 | 16.91 |
| 2026-02-08 00:00 | 09:31:51.54 | -09:43:12.2 | HIP 46728 | 16.88 |
| 2026-02-08 12:00 | 09:31:49.83 | -09:43:05.3 | HIP 46728 | 16.86 |
| 2026-02-09 00:00 | 09:31:48.12 | -09:42:58.3 | HIP 46728 | 16.85 |
| 2026-02-09 12:00 | 09:31:46.41 | -09:42:51.2 | HIP 46728 | 16.86 |
| 2026-02-10 00:00 | 09:31:44.69 | -09:42:44.0 | HIP 46728 | 16.88 |
| 2026-02-10 12:00 | 09:31:42.98 | -09:42:36.7 | HIP 46728 | 16.92 |
| 2026-02-11 00:00 | 09:31:41.27 | -09:42:29.3 | HIP 46728 | 16.96 |
| 2026-02-11 12:00 | 09:31:39.55 | -09:42:21.8 | HIP 46728 | 17.02 |
| 2026-02-12 00:00 | 09:31:37.84 | -09:42:14.3 | HIP 46728 | 17.09 |
| 2026-02-12 12:00 | 09:31:36.13 | -09:42:06.6 | HIP 46728 | 17.18 |
| 2026-02-13 00:00 | 09:31:34.42 | -09:41:58.8 | HIP 46728 | 17.27 |
| 2026-02-13 12:00 | 09:31:32.71 | -09:41:51.0 | HIP 46728 | 17.38 |
| 2026-02-14 00:00 | 09:31:31.00 | -09:41:43.0 | HIP 46728 | 17.50 |
| 2026-02-14 12:00 | 09:31:29.29 | -09:41:35.0 | HIP 46728 | 17.63 |
| 2026-02-15 00:00 | 09:31:27.59 | -09:41:26.8 | HIP 46728 | 17.78 |
| 2026-02-15 12:00 | 09:31:25.88 | -09:41:18.6 | HIP 46728 | 17.93 |
| 2026-02-16 00:00 | 09:31:24.18 | -09:41:10.3 | HIP 46728 | 18.10 |
| 2026-02-16 12:00 | 09:31:22.48 | -09:41:01.9 | HIP 46728 | 18.28 |
| 2026-02-17 00:00 | 09:31:20.78 | -09:40:53.4 | HIP 46728 | 18.46 |
| 2026-02-17 12:00 | 09:31:19.08 | -09:40:44.8 | HIP 46728 | 18.66 |
| 2026-02-18 00:00 | 09:31:17.38 | -09:40:36.2 | HIP 46728 | 18.87 |
| 2026-02-18 12:00 | 09:31:15.69 | -09:40:27.4 | HIP 46728 | 19.08 |
| 2026-02-19 00:00 | 09:31:14.00 | -09:40:18.6 | HIP 46728 | 19.31 |
| 2026-02-19 12:00 | 09:31:12.31 | -09:40:09.7 | HIP 46728 | 19.54 |
| 2026-02-20 00:00 | 09:31:10.63 | -09:40:00.7 | HIP 46728 | 19.78 |
| 2026-02-20 12:00 | 09:31:08.94 | -09:39:51.6 | HIP 46728 | 20.03 |
| 2026-02-21 00:00 | 09:31:07.26 | -09:39:42.5 | HIP 46728 | 20.29 |
| 2026-02-21 12:00 | 09:31:05.59 | -09:39:33.2 | HIP 46728 | 20.55 |
| 2026-02-22 00:00 | 09:31:03.91 | -09:39:23.9 | HIP 46728 | 20.83 |
| 2026-02-22 12:00 | 09:31:02.24 | -09:39:14.5 | HIP 46728 | 21.10 |
| 2026-02-23 00:00 | 09:31:00.58 | -09:39:05.1 | HIP 46728 | 21.39 |
| 2026-02-23 12:00 | 09:30:58.92 | -09:38:55.5 | HIP 46728 | 21.68 |
| 2026-02-24 00:00 | 09:30:57.26 | -09:38:45.9 | HIP 46728 | 21.97 |