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 | +7.1796 | -0.282 |
| 1982-07-10 | 1982-08-06 | -6.0673 | -0.023 |
| 1982-08-06 | 1982-08-24 | +9.1400 | +2.618 |
| 1982-08-24 | 1982-09-21 | -3.7033 | -0.749 |
| 1982-09-21 | 1982-11-21 | +3.7455 | -0.223 |
| 1982-11-21 | 1983-04-02 | +12.0937 | -2.471 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-09-20 00:00 | 09:33:35.01 | -09:17:37.2 | HIP 46875 | 6.82 |
| 2026-09-20 12:00 | 09:33:36.29 | -09:17:49.6 | HIP 46875 | 7.09 |
| 2026-09-21 00:00 | 09:33:37.57 | -09:18:02.1 | HIP 46875 | 7.37 |
| 2026-09-21 12:00 | 09:33:38.84 | -09:18:14.5 | HIP 46875 | 7.66 |
| 2026-09-22 00:00 | 09:33:40.10 | -09:18:27.1 | HIP 46875 | 7.95 |
| 2026-09-22 12:00 | 09:33:41.35 | -09:18:39.6 | HIP 46875 | 8.25 |
| 2026-09-23 00:00 | 09:33:42.59 | -09:18:52.2 | HIP 46875 | 8.55 |
| 2026-09-23 12:00 | 09:33:43.83 | -09:19:04.8 | HIP 46875 | 8.86 |
| 2026-09-24 00:00 | 09:33:45.06 | -09:19:17.5 | HIP 46875 | 9.16 |
| 2026-09-24 12:00 | 09:33:46.27 | -09:19:30.2 | HIP 46875 | 9.47 |
| 2026-09-25 00:00 | 09:33:47.48 | -09:19:42.9 | HIP 46875 | 9.78 |
| 2026-09-25 12:00 | 09:33:48.68 | -09:19:55.6 | HIP 46875 | 10.10 |
| 2026-09-26 00:00 | 09:33:49.87 | -09:20:08.3 | HIP 46875 | 10.41 |
| 2026-09-26 12:00 | 09:33:51.06 | -09:20:21.1 | HIP 46875 | 10.73 |
| 2026-09-27 00:00 | 09:33:52.23 | -09:20:33.9 | HIP 46875 | 11.04 |
| 2026-09-27 12:00 | 09:33:53.39 | -09:20:46.7 | HIP 46875 | 11.36 |
| 2026-09-28 00:00 | 09:33:54.55 | -09:20:59.6 | HIP 46875 | 11.67 |
| 2026-09-28 12:00 | 09:33:55.69 | -09:21:12.4 | HIP 46875 | 11.99 |
| 2026-09-29 00:00 | 09:33:56.83 | -09:21:25.3 | HIP 46875 | 12.31 |
| 2026-09-29 12:00 | 09:33:57.95 | -09:21:38.2 | HIP 46875 | 12.62 |
| 2026-09-30 00:00 | 09:33:59.07 | -09:21:51.2 | HIP 46875 | 12.94 |
| 2026-09-30 12:00 | 09:34:00.18 | -09:22:04.1 | HIP 46875 | 13.25 |
| 2026-10-01 00:00 | 09:34:01.28 | -09:22:17.1 | HIP 46875 | 13.57 |
| 2026-10-01 12:00 | 09:34:02.36 | -09:22:30.0 | HIP 46875 | 13.88 |
| 2026-10-02 00:00 | 09:34:03.44 | -09:22:43.0 | HIP 46875 | 14.19 |
| 2026-10-02 12:00 | 09:34:04.51 | -09:22:56.0 | HIP 46875 | 14.50 |
| 2026-10-03 00:00 | 09:34:05.56 | -09:23:09.1 | HIP 46875 | 14.81 |
| 2026-10-03 12:00 | 09:34:06.61 | -09:23:22.1 | HIP 46875 | 15.12 |
| 2026-10-04 00:00 | 09:34:07.65 | -09:23:35.1 | HIP 46875 | 15.43 |
| 2026-10-04 12:00 | 09:34:08.67 | -09:23:48.2 | HIP 46875 | 15.74 |
| 2026-10-05 00:00 | 09:34:09.69 | -09:24:01.3 | HIP 46875 | 16.04 |
| 2026-10-05 12:00 | 09:34:10.69 | -09:24:14.3 | HIP 46875 | 16.35 |
| 2026-10-06 00:00 | 09:34:11.69 | -09:24:27.4 | HIP 46875 | 16.65 |
| 2026-10-06 12:00 | 09:34:12.67 | -09:24:40.5 | HIP 46875 | 16.95 |
| 2026-10-07 00:00 | 09:34:13.65 | -09:24:53.6 | HIP 46875 | 17.25 |
| 2026-10-07 12:00 | 09:34:14.61 | -09:25:06.7 | HIP 46875 | 17.55 |
| 2026-10-08 00:00 | 09:34:15.56 | -09:25:19.8 | HIP 46875 | 17.85 |
| 2026-10-08 12:00 | 09:34:16.50 | -09:25:32.9 | HIP 46875 | 18.14 |
| 2026-10-09 00:00 | 09:34:17.43 | -09:25:46.0 | HIP 46875 | 18.43 |
| 2026-10-09 12:00 | 09:34:18.34 | -09:25:59.2 | HIP 46875 | 18.72 |
| 2026-10-10 00:00 | 09:34:19.25 | -09:26:12.3 | HIP 46875 | 19.01 |
| 2026-10-10 12:00 | 09:34:20.14 | -09:26:25.4 | HIP 46875 | 19.30 |
| 2026-10-11 00:00 | 09:34:21.03 | -09:26:38.5 | HIP 46875 | 19.59 |