메타데이터
| 항목 |
값 |
| Designation |
C/1898 F1 (Perrine) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1898-03-17T15:10:30.002880Z |
| Orbit solution date (soln_date, UTC) |
2023-10-09T20:36:13Z |
| Obs used |
327 |
| NEO |
- |
| M1 |
6.400 |
| K1 |
10.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1898-05-18.0000000 |
| e |
0.98044913 |
| q (au) |
1.095263 |
| a (au) |
56.021170 |
| i (deg) |
72.529160 |
| Ω (om, deg) |
263.867101 |
| ω (w, deg) |
47.308039 |
| M (ma, deg) |
0.144250 |
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) |
| 2026-09-20 00:00 |
06:33:34.47 |
-17:47:56.0 |
HIP 31206 |
12.35 |
| 2026-09-20 12:00 |
06:33:34.68 |
-17:48:07.7 |
HIP 31206 |
12.48 |
| 2026-09-21 00:00 |
06:33:34.89 |
-17:48:19.4 |
HIP 31206 |
12.61 |
| 2026-09-21 12:00 |
06:33:35.08 |
-17:48:31.1 |
HIP 31206 |
12.74 |
| 2026-09-22 00:00 |
06:33:35.27 |
-17:48:42.9 |
HIP 31206 |
12.87 |
| 2026-09-22 12:00 |
06:33:35.44 |
-17:48:54.6 |
HIP 31206 |
13.00 |
| 2026-09-23 00:00 |
06:33:35.61 |
-17:49:06.3 |
HIP 31206 |
13.13 |
| 2026-09-23 12:00 |
06:33:35.76 |
-17:49:18.1 |
HIP 31206 |
13.26 |
| 2026-09-24 00:00 |
06:33:35.90 |
-17:49:29.8 |
HIP 31206 |
13.39 |
| 2026-09-24 12:00 |
06:33:36.03 |
-17:49:41.6 |
HIP 31206 |
13.52 |
| 2026-09-25 00:00 |
06:33:36.16 |
-17:49:53.4 |
HIP 31206 |
13.64 |
| 2026-09-25 12:00 |
06:33:36.27 |
-17:50:05.2 |
HIP 31206 |
13.77 |
| 2026-09-26 00:00 |
06:33:36.37 |
-17:50:16.9 |
HIP 31206 |
13.90 |
| 2026-09-26 12:00 |
06:33:36.46 |
-17:50:28.7 |
HIP 31206 |
14.03 |
| 2026-09-27 00:00 |
06:33:36.54 |
-17:50:40.5 |
HIP 31206 |
14.15 |
| 2026-09-27 12:00 |
06:33:36.61 |
-17:50:52.3 |
HIP 31262 |
14.09 |
| 2026-09-28 00:00 |
06:33:36.67 |
-17:51:04.1 |
HIP 31262 |
13.90 |
| 2026-09-28 12:00 |
06:33:36.72 |
-17:51:15.9 |
HIP 31262 |
13.71 |
| 2026-09-29 00:00 |
06:33:36.76 |
-17:51:27.7 |
HIP 31262 |
13.52 |
| 2026-09-29 12:00 |
06:33:36.78 |
-17:51:39.5 |
HIP 31262 |
13.33 |
| 2026-09-30 00:00 |
06:33:36.80 |
-17:51:51.2 |
HIP 31262 |
13.14 |
| 2026-09-30 12:00 |
06:33:36.81 |
-17:52:03.0 |
HIP 31262 |
12.95 |
| 2026-10-01 00:00 |
06:33:36.81 |
-17:52:14.8 |
HIP 31262 |
12.76 |
| 2026-10-01 12:00 |
06:33:36.79 |
-17:52:26.6 |
HIP 31262 |
12.57 |
| 2026-10-02 00:00 |
06:33:36.77 |
-17:52:38.4 |
HIP 31262 |
12.38 |
| 2026-10-02 12:00 |
06:33:36.73 |
-17:52:50.1 |
HIP 31262 |
12.19 |
| 2026-10-03 00:00 |
06:33:36.69 |
-17:53:01.9 |
HIP 31262 |
12.00 |
| 2026-10-03 12:00 |
06:33:36.63 |
-17:53:13.6 |
HIP 31262 |
11.80 |
| 2026-10-04 00:00 |
06:33:36.56 |
-17:53:25.4 |
HIP 31262 |
11.61 |
| 2026-10-04 12:00 |
06:33:36.49 |
-17:53:37.1 |
HIP 31262 |
11.42 |
| 2026-10-05 00:00 |
06:33:36.40 |
-17:53:48.8 |
HIP 31262 |
11.23 |
| 2026-10-05 12:00 |
06:33:36.30 |
-17:54:00.5 |
HIP 31262 |
11.03 |
| 2026-10-06 00:00 |
06:33:36.19 |
-17:54:12.3 |
HIP 31262 |
10.84 |
| 2026-10-06 12:00 |
06:33:36.07 |
-17:54:23.9 |
HIP 31262 |
10.64 |
| 2026-10-07 00:00 |
06:33:35.94 |
-17:54:35.6 |
HIP 31262 |
10.45 |
| 2026-10-07 12:00 |
06:33:35.80 |
-17:54:47.3 |
HIP 31262 |
10.25 |
| 2026-10-08 00:00 |
06:33:35.65 |
-17:54:58.9 |
HIP 31262 |
10.05 |
| 2026-10-08 12:00 |
06:33:35.49 |
-17:55:10.5 |
HIP 31262 |
9.86 |
| 2026-10-09 00:00 |
06:33:35.31 |
-17:55:22.2 |
HIP 31262 |
9.66 |
| 2026-10-09 12:00 |
06:33:35.13 |
-17:55:33.8 |
HIP 31262 |
9.46 |
| 2026-10-10 00:00 |
06:33:34.94 |
-17:55:45.3 |
HIP 31262 |
9.27 |
| 2026-10-10 12:00 |
06:33:34.73 |
-17:55:56.9 |
HIP 31262 |
9.07 |
| 2026-10-11 00:00 |
06:33:34.52 |
-17:56:08.4 |
HIP 31262 |
8.87 |