메타데이터
| 항목 |
값 |
| Designation |
C/1975 T1 (Mori-Sato-Fujikawa) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1975-12-25T21:03:54.645120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:24Z |
| Obs used |
193 |
| NEO |
- |
| M1 |
6.300 |
| K1 |
6.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1975-12-18.0000000 |
| e |
0.99745745 |
| q (au) |
1.603934 |
| a (au) |
630.836848 |
| i (deg) |
91.607721 |
| Ω (om, deg) |
278.678467 |
| ω (w, deg) |
246.241227 |
| M (ma, deg) |
359.999510 |
밝기
산란 + 전체 선형
$$
M_a = (4.062 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
4.062 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.978 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
18:17:56.66 |
+26:59:06.5 |
HIP 89704 |
11.37 |
| 2026-07-29 12:00 |
18:17:55.15 |
+26:58:57.0 |
HIP 89704 |
11.70 |
| 2026-07-30 00:00 |
18:17:53.66 |
+26:58:47.4 |
HIP 89704 |
12.04 |
| 2026-07-30 12:00 |
18:17:52.18 |
+26:58:37.6 |
HIP 89704 |
12.37 |
| 2026-07-31 00:00 |
18:17:50.70 |
+26:58:27.7 |
HIP 89704 |
12.71 |
| 2026-07-31 12:00 |
18:17:49.23 |
+26:58:17.7 |
HIP 89704 |
13.05 |
| 2026-08-01 00:00 |
18:17:47.77 |
+26:58:07.5 |
HIP 89704 |
13.39 |
| 2026-08-01 12:00 |
18:17:46.32 |
+26:57:57.2 |
HIP 89704 |
13.74 |
| 2026-08-02 00:00 |
18:17:44.88 |
+26:57:46.8 |
HIP 89704 |
14.08 |
| 2026-08-02 12:00 |
18:17:43.45 |
+26:57:36.3 |
HIP 89704 |
14.43 |
| 2026-08-03 00:00 |
18:17:42.02 |
+26:57:25.7 |
HIP 89704 |
14.78 |
| 2026-08-03 12:00 |
18:17:40.61 |
+26:57:14.9 |
HIP 89577 |
15.07 |
| 2026-08-04 00:00 |
18:17:39.20 |
+26:57:04.0 |
HIP 89577 |
14.92 |
| 2026-08-04 12:00 |
18:17:37.80 |
+26:56:53.0 |
HIP 89577 |
14.77 |
| 2026-08-05 00:00 |
18:17:36.41 |
+26:56:41.9 |
HIP 89577 |
14.64 |
| 2026-08-05 12:00 |
18:17:35.04 |
+26:56:30.6 |
HIP 89577 |
14.52 |
| 2026-08-06 00:00 |
18:17:33.67 |
+26:56:19.3 |
HIP 89577 |
14.41 |
| 2026-08-06 12:00 |
18:17:32.31 |
+26:56:07.8 |
HIP 89577 |
14.31 |
| 2026-08-07 00:00 |
18:17:30.96 |
+26:55:56.2 |
HIP 89577 |
14.22 |
| 2026-08-07 12:00 |
18:17:29.62 |
+26:55:44.5 |
HIP 89577 |
14.14 |
| 2026-08-08 00:00 |
18:17:28.29 |
+26:55:32.6 |
HIP 89577 |
14.08 |
| 2026-08-08 12:00 |
18:17:26.97 |
+26:55:20.7 |
HIP 89577 |
14.03 |
| 2026-08-09 00:00 |
18:17:25.66 |
+26:55:08.6 |
HIP 89577 |
13.98 |
| 2026-08-09 12:00 |
18:17:24.36 |
+26:54:56.5 |
HIP 89577 |
13.95 |
| 2026-08-10 00:00 |
18:17:23.07 |
+26:54:44.2 |
HIP 89577 |
13.94 |
| 2026-08-10 12:00 |
18:17:21.79 |
+26:54:31.8 |
HIP 89577 |
13.93 |
| 2026-08-11 00:00 |
18:17:20.53 |
+26:54:19.3 |
HIP 89577 |
13.93 |
| 2026-08-11 12:00 |
18:17:19.27 |
+26:54:06.7 |
HIP 89577 |
13.95 |
| 2026-08-12 00:00 |
18:17:18.02 |
+26:53:54.0 |
HIP 89577 |
13.98 |
| 2026-08-12 12:00 |
18:17:16.79 |
+26:53:41.2 |
HIP 89577 |
14.02 |
| 2026-08-13 00:00 |
18:17:15.56 |
+26:53:28.2 |
HIP 89577 |
14.07 |
| 2026-08-13 12:00 |
18:17:14.35 |
+26:53:15.2 |
HIP 89577 |
14.13 |
| 2026-08-14 00:00 |
18:17:13.15 |
+26:53:02.1 |
HIP 89577 |
14.20 |
| 2026-08-14 12:00 |
18:17:11.96 |
+26:52:48.8 |
HIP 89577 |
14.29 |
| 2026-08-15 00:00 |
18:17:10.78 |
+26:52:35.5 |
HIP 89577 |
14.38 |
| 2026-08-15 12:00 |
18:17:09.61 |
+26:52:22.0 |
HIP 89577 |
14.48 |
| 2026-08-16 00:00 |
18:17:08.46 |
+26:52:08.5 |
HIP 89577 |
14.60 |
| 2026-08-16 12:00 |
18:17:07.31 |
+26:51:54.9 |
HIP 89577 |
14.72 |
| 2026-08-17 00:00 |
18:17:06.18 |
+26:51:41.2 |
HIP 89577 |
14.85 |
| 2026-08-17 12:00 |
18:17:05.06 |
+26:51:27.3 |
HIP 89656 |
14.97 |
| 2026-08-18 00:00 |
18:17:03.95 |
+26:51:13.4 |
HIP 89656 |
14.96 |
| 2026-08-18 12:00 |
18:17:02.85 |
+26:50:59.4 |
HIP 89656 |
14.96 |
| 2026-08-19 00:00 |
18:17:01.77 |
+26:50:45.3 |
HIP 89656 |
14.97 |