메타데이터
| 항목 |
값 |
| Designation |
76P/West-Kohoutek-Ikemura |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-05-07T18:45:44.487360Z |
| Orbit solution date (soln_date, UTC) |
2026-05-29T11:31:18Z |
| Obs used |
963 |
| NEO |
- |
| M1 |
16.400 |
| K1 |
7.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-11-28.0000000 |
| e |
0.53889844 |
| q (au) |
1.600203 |
| a (au) |
3.470391 |
| i (deg) |
30.483083 |
| Ω (om, deg) |
84.124220 |
| ω (w, deg) |
0.071296 |
| M (ma, deg) |
335.488311 |
밝기
산란 + 전체 선형
$$
M_a = (15.527 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.527 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.800 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
09:23:25.96 |
+32:45:10.5 |
HIP 46023 |
10.61 |
| 2026-07-29 12:00 |
09:24:53.34 |
+32:41:55.6 |
HIP 46248 |
11.51 |
| 2026-07-30 00:00 |
09:26:20.52 |
+32:38:38.3 |
HIP 46248 |
10.30 |
| 2026-07-30 12:00 |
09:27:47.50 |
+32:35:18.5 |
HIP 46248 |
27.80 |
| 2026-07-31 00:00 |
09:29:14.29 |
+32:31:56.4 |
HIP 46660 |
22.09 |
| 2026-07-31 12:00 |
09:30:40.88 |
+32:28:32.0 |
HIP 46660 |
13.59 |
| 2026-08-01 00:00 |
09:32:07.28 |
+32:25:05.3 |
HIP 46915 |
21.79 |
| 2026-08-01 12:00 |
09:33:33.48 |
+32:21:36.3 |
HIP 46915 |
10.73 |
| 2026-08-02 00:00 |
09:34:59.48 |
+32:18:05.1 |
HIP 46915 |
21.00 |
| 2026-08-02 12:00 |
09:36:25.29 |
+32:14:31.6 |
HIP 47170 |
8.17 |
| 2026-08-03 00:00 |
09:37:50.89 |
+32:10:56.0 |
HIP 47170 |
14.65 |
| 2026-08-03 12:00 |
09:39:16.30 |
+32:07:18.2 |
HIP 47395 |
22.06 |
| 2026-08-04 00:00 |
09:40:41.51 |
+32:03:38.3 |
HIP 47395 |
24.57 |
| 2026-08-04 12:00 |
09:42:06.52 |
+31:59:56.2 |
HIP 47652 |
18.97 |
| 2026-08-05 00:00 |
09:43:31.34 |
+31:56:12.1 |
HIP 47661 |
19.78 |
| 2026-08-05 12:00 |
09:44:55.95 |
+31:52:26.0 |
HIP 47955 |
21.23 |
| 2026-08-06 00:00 |
09:46:20.36 |
+31:48:37.8 |
HIP 47955 |
16.11 |
| 2026-08-06 12:00 |
09:47:44.57 |
+31:44:47.7 |
HIP 48082 |
22.67 |
| 2026-08-07 00:00 |
09:49:08.58 |
+31:40:55.6 |
HIP 48292 |
26.90 |
| 2026-08-07 12:00 |
09:50:32.40 |
+31:37:01.6 |
HIP 48292 |
13.73 |
| 2026-08-08 00:00 |
09:51:56.01 |
+31:33:05.7 |
HIP 48435 |
7.05 |
| 2026-08-08 12:00 |
09:53:19.41 |
+31:29:07.9 |
HIP 48435 |
11.28 |
| 2026-08-09 00:00 |
09:54:42.62 |
+31:25:08.3 |
HIP 48607 |
24.88 |
| 2026-08-09 12:00 |
09:56:05.63 |
+31:21:06.8 |
HIP 48740 |
23.79 |
| 2026-08-10 00:00 |
09:57:28.43 |
+31:17:03.7 |
HIP 48740 |
29.96 |
| 2026-08-10 12:00 |
09:58:51.03 |
+31:12:58.7 |
HIP 48997 |
19.35 |
| 2026-08-11 00:00 |
10:00:13.43 |
+31:08:52.1 |
HIP 48997 |
20.24 |
| 2026-08-11 12:00 |
10:01:35.63 |
+31:04:43.7 |
HIP 49173 |
27.92 |
| 2026-08-12 00:00 |
10:02:57.62 |
+31:00:33.7 |
HIP 49113 |
32.23 |
| 2026-08-12 12:00 |
10:04:19.41 |
+30:56:22.1 |
HIP 49441 |
19.14 |
| 2026-08-13 00:00 |
10:05:41.00 |
+30:52:08.9 |
HIP 49441 |
13.08 |
| 2026-08-13 12:00 |
10:07:02.38 |
+30:47:54.1 |
HIP 49685 |
23.02 |
| 2026-08-14 00:00 |
10:08:23.55 |
+30:43:37.8 |
HIP 49685 |
8.22 |
| 2026-08-14 12:00 |
10:09:44.53 |
+30:39:20.0 |
HIP 49685 |
15.80 |
| 2026-08-15 00:00 |
10:11:05.29 |
+30:35:00.7 |
HIP 49914 |
13.75 |
| 2026-08-15 12:00 |
10:12:25.86 |
+30:30:40.0 |
HIP 49914 |
21.13 |
| 2026-08-16 00:00 |
10:13:46.21 |
+30:26:17.9 |
HIP 50185 |
14.43 |
| 2026-08-16 12:00 |
10:15:06.37 |
+30:21:54.3 |
HIP 50185 |
13.86 |
| 2026-08-17 00:00 |
10:16:26.32 |
+30:17:29.4 |
HIP 50446 |
21.86 |
| 2026-08-17 12:00 |
10:17:46.06 |
+30:13:03.2 |
HIP 50446 |
13.03 |
| 2026-08-18 00:00 |
10:19:05.60 |
+30:08:35.6 |
HIP 50484 |
20.73 |
| 2026-08-18 12:00 |
10:20:24.93 |
+30:04:06.8 |
HIP 50484 |
28.62 |
| 2026-08-19 00:00 |
10:21:44.06 |
+29:59:36.7 |
HIP 50840 |
25.01 |