C/1971 M1 (Edwards)
메타데이터
| 항목 |
값 |
| Designation |
C/1971 M1 (Edwards) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1971-12-07T23:04:58.232640Z |
| Orbit solution date (soln_date, UTC) |
2023-03-26T23:42:03Z |
| Obs used |
7 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1971-07-04.0000000 |
| e |
1.00000000 |
| q (au) |
2.881429 |
| a (au) |
- |
| i (deg) |
97.149236 |
| Ω (om, deg) |
267.776204 |
| ω (w, deg) |
44.179761 |
| M (ma, deg) |
- |
밝기
산란 + 전체 선형
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
05:38:58.73 |
+01:11:38.0 |
HIP 26481 |
19.93 |
| 2026-02-03 12:00 |
05:38:57.69 |
+01:11:43.3 |
HIP 26481 |
19.79 |
| 2026-02-04 00:00 |
05:38:56.66 |
+01:11:48.8 |
HIP 26481 |
19.65 |
| 2026-02-04 12:00 |
05:38:55.64 |
+01:11:54.3 |
HIP 26481 |
19.51 |
| 2026-02-05 00:00 |
05:38:54.64 |
+01:11:59.8 |
HIP 26481 |
19.38 |
| 2026-02-05 12:00 |
05:38:53.64 |
+01:12:05.4 |
HIP 26481 |
19.25 |
| 2026-02-06 00:00 |
05:38:52.65 |
+01:12:11.1 |
HIP 26481 |
19.14 |
| 2026-02-06 12:00 |
05:38:51.68 |
+01:12:16.8 |
HIP 26481 |
19.02 |
| 2026-02-07 00:00 |
05:38:50.71 |
+01:12:22.5 |
HIP 26481 |
18.91 |
| 2026-02-07 12:00 |
05:38:49.76 |
+01:12:28.3 |
HIP 26481 |
18.81 |
| 2026-02-08 00:00 |
05:38:48.82 |
+01:12:34.2 |
HIP 26481 |
18.71 |
| 2026-02-08 12:00 |
05:38:47.88 |
+01:12:40.1 |
HIP 26481 |
18.62 |
| 2026-02-09 00:00 |
05:38:46.96 |
+01:12:46.0 |
HIP 26481 |
18.53 |
| 2026-02-09 12:00 |
05:38:46.05 |
+01:12:52.0 |
HIP 26481 |
18.45 |
| 2026-02-10 00:00 |
05:38:45.16 |
+01:12:58.1 |
HIP 26481 |
18.38 |
| 2026-02-10 12:00 |
05:38:44.27 |
+01:13:04.2 |
HIP 26481 |
18.31 |
| 2026-02-11 00:00 |
05:38:43.39 |
+01:13:10.3 |
HIP 26481 |
18.24 |
| 2026-02-11 12:00 |
05:38:42.53 |
+01:13:16.5 |
HIP 26481 |
18.18 |
| 2026-02-12 00:00 |
05:38:41.68 |
+01:13:22.8 |
HIP 26481 |
18.13 |
| 2026-02-12 12:00 |
05:38:40.84 |
+01:13:29.1 |
HIP 26481 |
18.08 |
| 2026-02-13 00:00 |
05:38:40.01 |
+01:13:35.4 |
HIP 26481 |
18.04 |
| 2026-02-13 12:00 |
05:38:39.19 |
+01:13:41.8 |
HIP 26481 |
18.00 |
| 2026-02-14 00:00 |
05:38:38.39 |
+01:13:48.2 |
HIP 26481 |
17.97 |
| 2026-02-14 12:00 |
05:38:37.60 |
+01:13:54.6 |
HIP 26481 |
17.94 |
| 2026-02-15 00:00 |
05:38:36.81 |
+01:14:01.2 |
HIP 26481 |
17.92 |
| 2026-02-15 12:00 |
05:38:36.05 |
+01:14:07.7 |
HIP 26481 |
17.90 |
| 2026-02-16 00:00 |
05:38:35.29 |
+01:14:14.3 |
HIP 26481 |
17.89 |
| 2026-02-16 12:00 |
05:38:34.54 |
+01:14:20.9 |
HIP 26481 |
17.88 |
| 2026-02-17 00:00 |
05:38:33.81 |
+01:14:27.6 |
HIP 26481 |
17.88 |
| 2026-02-17 12:00 |
05:38:33.09 |
+01:14:34.3 |
HIP 26481 |
17.88 |
| 2026-02-18 00:00 |
05:38:32.38 |
+01:14:41.1 |
HIP 26481 |
17.89 |
| 2026-02-18 12:00 |
05:38:31.69 |
+01:14:47.9 |
HIP 26481 |
17.90 |
| 2026-02-19 00:00 |
05:38:31.00 |
+01:14:54.7 |
HIP 26481 |
17.91 |
| 2026-02-19 12:00 |
05:38:30.33 |
+01:15:01.5 |
HIP 26481 |
17.93 |
| 2026-02-20 00:00 |
05:38:29.68 |
+01:15:08.4 |
HIP 26481 |
17.96 |
| 2026-02-20 12:00 |
05:38:29.03 |
+01:15:15.4 |
HIP 26481 |
17.99 |
| 2026-02-21 00:00 |
05:38:28.40 |
+01:15:22.4 |
HIP 26481 |
18.02 |
| 2026-02-21 12:00 |
05:38:27.78 |
+01:15:29.4 |
HIP 26481 |
18.05 |
| 2026-02-22 00:00 |
05:38:27.17 |
+01:15:36.4 |
HIP 26481 |
18.09 |
| 2026-02-22 12:00 |
05:38:26.57 |
+01:15:43.5 |
HIP 26481 |
18.14 |
| 2026-02-23 00:00 |
05:38:25.99 |
+01:15:50.6 |
HIP 26481 |
18.19 |
| 2026-02-23 12:00 |
05:38:25.42 |
+01:15:57.7 |
HIP 26481 |
18.24 |
| 2026-02-24 00:00 |
05:38:24.86 |
+01:16:04.9 |
HIP 26481 |
18.29 |