C/1995 O1 (Hale-Bopp)
메타데이터
| 항목 | 값 |
|---|---|
| Designation | C/1995 O1 (Hale-Bopp) |
| Type | C |
| Perihelion (tp_cal, UTC) | 1997-03-29T15:14:15.973440Z |
| Orbit solution date (soln_date, UTC) | 2022-08-01T01:56:46Z |
| Obs used | 66 |
| NEO | - |
| M1 | 4.800 |
| K1 | 4.000 |
| PC | - |
Osculating 궤도요소
| 항목 | 값 |
|---|---|
| Epoch (epoch_cal, TDB) | 2022-09-15.0000000 |
| e | 0.99498100 |
| q (au) | 0.890538 |
| a (au) | 177.433384 |
| i (deg) | 89.287594 |
| Ω (om, deg) | 282.733421 |
| ω (w, deg) | 130.414667 |
| M (ma, deg) | 3.878386 |
밝기
산란 + 전체 선형
$$ M_a = (-1.380 + 3.909\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
모델 상수
| 항목 | 값 |
|---|---|
| H0 | -1.380 |
| n | 3.909 |
| gf | 1.000 |
| gb | -0.775 |
| k | 0.992 |
| 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 |
|---|---|---|---|
| 1993-04-27 | 1995-08-14 | +22.3841 | -18.479 |
| 1995-08-14 | 1996-10-19 | +1.1205 | -0.683 |
| 1996-10-19 | 1996-11-12 | -13.5390 | +5.700 |
| 1996-11-12 | 1997-03-29 | +1.5786 | +0.131 |
| 1997-03-29 | 1997-10-13 | +1.1435 | -0.117 |
| 1997-10-13 | 2000-02-10 | -1.1481 | +1.410 |
| 2000-02-10 | 2013-08-13 | +6.3115 | -6.332 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-03-26 00:00 | 22:36:42.61 | -83:28:53.7 | HIP 112049 | 8.62 |
| 2026-03-26 12:00 | 22:36:59.21 | -83:29:05.5 | HIP 112049 | 8.18 |
| 2026-03-27 00:00 | 22:37:15.75 | -83:29:17.6 | HIP 112049 | 7.75 |
| 2026-03-27 12:00 | 22:37:32.23 | -83:29:29.9 | HIP 112049 | 7.33 |
| 2026-03-28 00:00 | 22:37:48.65 | -83:29:42.4 | HIP 112049 | 6.93 |
| 2026-03-28 12:00 | 22:38:05.01 | -83:29:55.2 | HIP 112049 | 6.55 |
| 2026-03-29 00:00 | 22:38:21.30 | -83:30:08.2 | HIP 112049 | 6.19 |
| 2026-03-29 12:00 | 22:38:37.53 | -83:30:21.4 | HIP 112049 | 5.86 |
| 2026-03-30 00:00 | 22:38:53.70 | -83:30:34.9 | HIP 112049 | 5.55 |
| 2026-03-30 12:00 | 22:39:09.80 | -83:30:48.6 | HIP 112049 | 5.29 |
| 2026-03-31 00:00 | 22:39:25.83 | -83:31:02.6 | HIP 112049 | 5.06 |
| 2026-03-31 12:00 | 22:39:41.80 | -83:31:16.8 | HIP 112049 | 4.88 |
| 2026-04-01 00:00 | 22:39:57.70 | -83:31:31.2 | HIP 112049 | 4.76 |
| 2026-04-01 12:00 | 22:40:13.54 | -83:31:45.8 | HIP 112049 | 4.69 |
| 2026-04-02 00:00 | 22:40:29.30 | -83:32:00.7 | HIP 112049 | 4.68 |
| 2026-04-02 12:00 | 22:40:45.00 | -83:32:15.8 | HIP 112049 | 4.74 |
| 2026-04-03 00:00 | 22:41:00.63 | -83:32:31.1 | HIP 112049 | 4.85 |
| 2026-04-03 12:00 | 22:41:16.18 | -83:32:46.7 | HIP 112049 | 5.01 |
| 2026-04-04 00:00 | 22:41:31.67 | -83:33:02.4 | HIP 112049 | 5.22 |
| 2026-04-04 12:00 | 22:41:47.08 | -83:33:18.5 | HIP 112049 | 5.48 |
| 2026-04-05 00:00 | 22:42:02.42 | -83:33:34.7 | HIP 112049 | 5.77 |
| 2026-04-05 12:00 | 22:42:17.68 | -83:33:51.2 | HIP 112049 | 6.10 |
| 2026-04-06 00:00 | 22:42:32.87 | -83:34:07.8 | HIP 112049 | 6.45 |
| 2026-04-06 12:00 | 22:42:47.99 | -83:34:24.8 | HIP 112049 | 6.83 |
| 2026-04-07 00:00 | 22:43:03.02 | -83:34:41.9 | HIP 112049 | 7.23 |
| 2026-04-07 12:00 | 22:43:17.98 | -83:34:59.2 | HIP 112049 | 7.64 |
| 2026-04-08 00:00 | 22:43:32.87 | -83:35:16.8 | HIP 112049 | 8.06 |
| 2026-04-08 12:00 | 22:43:47.67 | -83:35:34.6 | HIP 112049 | 8.50 |
| 2026-04-09 00:00 | 22:44:02.39 | -83:35:52.6 | HIP 112049 | 8.95 |
| 2026-04-09 12:00 | 22:44:17.04 | -83:36:10.9 | HIP 112372 | 8.62 |
| 2026-04-10 00:00 | 22:44:31.60 | -83:36:29.3 | HIP 112372 | 8.23 |
| 2026-04-10 12:00 | 22:44:46.08 | -83:36:48.0 | HIP 112372 | 7.84 |
| 2026-04-11 00:00 | 22:45:00.47 | -83:37:06.9 | HIP 112372 | 7.47 |
| 2026-04-11 12:00 | 22:45:14.79 | -83:37:26.0 | HIP 112372 | 7.11 |
| 2026-04-12 00:00 | 22:45:29.01 | -83:37:45.3 | HIP 112372 | 6.76 |
| 2026-04-12 12:00 | 22:45:43.15 | -83:38:04.8 | HIP 112372 | 6.43 |
| 2026-04-13 00:00 | 22:45:57.20 | -83:38:24.6 | HIP 112372 | 6.13 |
| 2026-04-13 12:00 | 22:46:11.17 | -83:38:44.6 | HIP 112372 | 5.84 |
| 2026-04-14 00:00 | 22:46:25.05 | -83:39:04.7 | HIP 112372 | 5.59 |
| 2026-04-14 12:00 | 22:46:38.83 | -83:39:25.1 | HIP 112372 | 5.36 |
| 2026-04-15 00:00 | 22:46:52.53 | -83:39:45.7 | HIP 112372 | 5.18 |
| 2026-04-15 12:00 | 22:47:06.13 | -83:40:06.5 | HIP 112372 | 5.03 |
| 2026-04-16 00:00 | 22:47:19.64 | -83:40:27.5 | HIP 112372 | 4.93 |