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) |
| 2026-05-12 00:00 |
18:22:12.15 |
+26:53:56.1 |
HIP 89993 |
6.33 |
| 2026-05-12 12:00 |
18:22:10.88 |
+26:54:09.1 |
HIP 89993 |
6.02 |
| 2026-05-13 00:00 |
18:22:09.59 |
+26:54:22.0 |
HIP 89993 |
5.71 |
| 2026-05-13 12:00 |
18:22:08.30 |
+26:54:34.8 |
HIP 89993 |
5.41 |
| 2026-05-14 00:00 |
18:22:07.00 |
+26:54:47.4 |
HIP 89993 |
5.11 |
| 2026-05-14 12:00 |
18:22:05.68 |
+26:55:00.0 |
HIP 89993 |
4.82 |
| 2026-05-15 00:00 |
18:22:04.36 |
+26:55:12.4 |
HIP 89993 |
4.54 |
| 2026-05-15 12:00 |
18:22:03.02 |
+26:55:24.7 |
HIP 89993 |
4.27 |
| 2026-05-16 00:00 |
18:22:01.68 |
+26:55:36.8 |
HIP 89993 |
4.00 |
| 2026-05-16 12:00 |
18:22:00.32 |
+26:55:48.9 |
HIP 89993 |
3.75 |
| 2026-05-17 00:00 |
18:21:58.96 |
+26:56:00.8 |
HIP 89993 |
3.52 |
| 2026-05-17 12:00 |
18:21:57.59 |
+26:56:12.6 |
HIP 89993 |
3.31 |
| 2026-05-18 00:00 |
18:21:56.20 |
+26:56:24.3 |
HIP 89993 |
3.12 |
| 2026-05-18 12:00 |
18:21:54.81 |
+26:56:35.9 |
HIP 89993 |
2.97 |
| 2026-05-19 00:00 |
18:21:53.41 |
+26:56:47.3 |
HIP 89993 |
2.85 |
| 2026-05-19 12:00 |
18:21:51.99 |
+26:56:58.6 |
HIP 89993 |
2.77 |
| 2026-05-20 00:00 |
18:21:50.57 |
+26:57:09.7 |
HIP 89993 |
2.73 |
| 2026-05-20 12:00 |
18:21:49.14 |
+26:57:20.8 |
HIP 89993 |
2.75 |
| 2026-05-21 00:00 |
18:21:47.70 |
+26:57:31.7 |
HIP 89993 |
2.80 |
| 2026-05-21 12:00 |
18:21:46.25 |
+26:57:42.5 |
HIP 89993 |
2.90 |
| 2026-05-22 00:00 |
18:21:44.80 |
+26:57:53.1 |
HIP 89993 |
3.04 |
| 2026-05-22 12:00 |
18:21:43.33 |
+26:58:03.6 |
HIP 89993 |
3.22 |
| 2026-05-23 00:00 |
18:21:41.85 |
+26:58:14.0 |
HIP 89993 |
3.42 |
| 2026-05-23 12:00 |
18:21:40.37 |
+26:58:24.3 |
HIP 89993 |
3.65 |
| 2026-05-24 00:00 |
18:21:38.88 |
+26:58:34.4 |
HIP 89993 |
3.90 |
| 2026-05-24 12:00 |
18:21:37.38 |
+26:58:44.3 |
HIP 89993 |
4.17 |
| 2026-05-25 00:00 |
18:21:35.87 |
+26:58:54.2 |
HIP 89993 |
4.45 |
| 2026-05-25 12:00 |
18:21:34.36 |
+26:59:03.9 |
HIP 89993 |
4.74 |
| 2026-05-26 00:00 |
18:21:32.84 |
+26:59:13.5 |
HIP 89993 |
5.04 |
| 2026-05-26 12:00 |
18:21:31.30 |
+26:59:22.9 |
HIP 89993 |
5.35 |
| 2026-05-27 00:00 |
18:21:29.77 |
+26:59:32.2 |
HIP 89993 |
5.67 |
| 2026-05-27 12:00 |
18:21:28.22 |
+26:59:41.4 |
HIP 89993 |
5.99 |
| 2026-05-28 00:00 |
18:21:26.67 |
+26:59:50.4 |
HIP 89993 |
6.32 |
| 2026-05-28 12:00 |
18:21:25.11 |
+26:59:59.3 |
HIP 89993 |
6.65 |
| 2026-05-29 00:00 |
18:21:23.54 |
+27:00:08.0 |
HIP 89993 |
6.99 |
| 2026-05-29 12:00 |
18:21:21.96 |
+27:00:16.6 |
HIP 89993 |
7.33 |
| 2026-05-30 00:00 |
18:21:20.38 |
+27:00:25.1 |
HIP 89993 |
7.67 |
| 2026-05-30 12:00 |
18:21:18.79 |
+27:00:33.4 |
HIP 89993 |
8.02 |
| 2026-05-31 00:00 |
18:21:17.20 |
+27:00:41.6 |
HIP 89993 |
8.37 |
| 2026-05-31 12:00 |
18:21:15.60 |
+27:00:49.6 |
HIP 89993 |
8.72 |
| 2026-06-01 00:00 |
18:21:13.99 |
+27:00:57.5 |
HIP 89993 |
9.07 |
| 2026-06-01 12:00 |
18:21:12.37 |
+27:01:05.3 |
HIP 89993 |
9.42 |
| 2026-06-02 00:00 |
18:21:10.75 |
+27:01:12.9 |
HIP 89993 |
9.78 |