메타데이터
| 항목 |
값 |
| Designation |
C/1987 F1 (Torres) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1987-04-10T04:42:36.086400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:33Z |
| Obs used |
50 |
| NEO |
- |
| M1 |
7.600 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1988-01-19.0000000 |
| e |
1.00120894 |
| q (au) |
3.624287 |
| a (au) |
-2997.904748 |
| i (deg) |
124.078713 |
| Ω (om, deg) |
194.487430 |
| ω (w, deg) |
329.070992 |
| M (ma, deg) |
0.001704 |
밝기
산란 + 전체 선형
$$
M_a = (3.446 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
3.446 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
02:23:47.29 |
+63:13:01.7 |
HIP 11209 |
11.04 |
| 2026-09-20 12:00 |
02:23:44.13 |
+63:13:10.0 |
HIP 11209 |
11.29 |
| 2026-09-21 00:00 |
02:23:40.95 |
+63:13:18.0 |
HIP 11209 |
11.54 |
| 2026-09-21 12:00 |
02:23:37.74 |
+63:13:26.0 |
HIP 11209 |
11.79 |
| 2026-09-22 00:00 |
02:23:34.51 |
+63:13:33.7 |
HIP 11209 |
12.06 |
| 2026-09-22 12:00 |
02:23:31.26 |
+63:13:41.2 |
HIP 11209 |
12.32 |
| 2026-09-23 00:00 |
02:23:27.99 |
+63:13:48.6 |
HIP 11209 |
12.60 |
| 2026-09-23 12:00 |
02:23:24.69 |
+63:13:55.8 |
HIP 11209 |
12.87 |
| 2026-09-24 00:00 |
02:23:21.37 |
+63:14:02.8 |
HIP 11209 |
13.15 |
| 2026-09-24 12:00 |
02:23:18.03 |
+63:14:09.6 |
HIP 11209 |
13.44 |
| 2026-09-25 00:00 |
02:23:14.67 |
+63:14:16.2 |
HIP 11209 |
13.73 |
| 2026-09-25 12:00 |
02:23:11.29 |
+63:14:22.7 |
HIP 11209 |
14.02 |
| 2026-09-26 00:00 |
02:23:07.88 |
+63:14:29.0 |
HIP 11209 |
14.31 |
| 2026-09-26 12:00 |
02:23:04.46 |
+63:14:35.0 |
HIP 11209 |
14.61 |
| 2026-09-27 00:00 |
02:23:01.01 |
+63:14:40.9 |
HIP 11209 |
14.92 |
| 2026-09-27 12:00 |
02:22:57.55 |
+63:14:46.6 |
HIP 11209 |
15.22 |
| 2026-09-28 00:00 |
02:22:54.06 |
+63:14:52.1 |
HIP 11209 |
15.53 |
| 2026-09-28 12:00 |
02:22:50.55 |
+63:14:57.5 |
HIP 11209 |
15.85 |
| 2026-09-29 00:00 |
02:22:47.03 |
+63:15:02.6 |
HIP 11209 |
16.16 |
| 2026-09-29 12:00 |
02:22:43.48 |
+63:15:07.6 |
HIP 11209 |
16.48 |
| 2026-09-30 00:00 |
02:22:39.92 |
+63:15:12.3 |
HIP 11209 |
16.81 |
| 2026-09-30 12:00 |
02:22:36.34 |
+63:15:16.9 |
HIP 11209 |
17.13 |
| 2026-10-01 00:00 |
02:22:32.73 |
+63:15:21.3 |
HIP 11209 |
17.46 |
| 2026-10-01 12:00 |
02:22:29.11 |
+63:15:25.4 |
HIP 11209 |
17.79 |
| 2026-10-02 00:00 |
02:22:25.47 |
+63:15:29.4 |
HIP 11209 |
18.12 |
| 2026-10-02 12:00 |
02:22:21.82 |
+63:15:33.2 |
HIP 10877 |
18.30 |
| 2026-10-03 00:00 |
02:22:18.14 |
+63:15:36.8 |
HIP 10877 |
17.97 |
| 2026-10-03 12:00 |
02:22:14.45 |
+63:15:40.2 |
HIP 10877 |
17.63 |
| 2026-10-04 00:00 |
02:22:10.74 |
+63:15:43.4 |
HIP 10877 |
17.29 |
| 2026-10-04 12:00 |
02:22:07.02 |
+63:15:46.5 |
HIP 10877 |
16.96 |
| 2026-10-05 00:00 |
02:22:03.28 |
+63:15:49.3 |
HIP 10877 |
16.62 |
| 2026-10-05 12:00 |
02:21:59.52 |
+63:15:51.9 |
HIP 10877 |
16.29 |
| 2026-10-06 00:00 |
02:21:55.74 |
+63:15:54.3 |
HIP 10877 |
15.95 |
| 2026-10-06 12:00 |
02:21:51.95 |
+63:15:56.5 |
HIP 10877 |
15.62 |
| 2026-10-07 00:00 |
02:21:48.15 |
+63:15:58.5 |
HIP 10877 |
15.29 |
| 2026-10-07 12:00 |
02:21:44.32 |
+63:16:00.3 |
HIP 10877 |
14.96 |
| 2026-10-08 00:00 |
02:21:40.49 |
+63:16:02.0 |
HIP 10877 |
14.64 |
| 2026-10-08 12:00 |
02:21:36.64 |
+63:16:03.4 |
HIP 10877 |
14.31 |
| 2026-10-09 00:00 |
02:21:32.77 |
+63:16:04.6 |
HIP 10877 |
13.99 |
| 2026-10-09 12:00 |
02:21:28.90 |
+63:16:05.6 |
HIP 10877 |
13.67 |
| 2026-10-10 00:00 |
02:21:25.00 |
+63:16:06.4 |
HIP 10877 |
13.36 |
| 2026-10-10 12:00 |
02:21:21.10 |
+63:16:07.0 |
HIP 10877 |
13.05 |
| 2026-10-11 00:00 |
02:21:17.18 |
+63:16:07.4 |
HIP 10877 |
12.74 |