메타데이터
| 항목 |
값 |
| Designation |
C/2004 F2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-12-26T15:29:44.825280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:38Z |
| Obs used |
144 |
| NEO |
- |
| M1 |
16.300 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2004-05-04.0000000 |
| e |
0.99055864 |
| q (au) |
1.430438 |
| a (au) |
151.507608 |
| i (deg) |
104.959961 |
| Ω (om, deg) |
248.273455 |
| ω (w, deg) |
317.143157 |
| M (ma, deg) |
0.068365 |
밝기
산란 + 전체 선형
$$
M_a = (17.356 + 3.043\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.356 |
| n |
3.043 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
07:45:03.14 |
+81:29:22.4 |
HIP 37961 |
12.25 |
| 2026-09-20 12:00 |
07:45:10.72 |
+81:29:52.2 |
HIP 37961 |
11.69 |
| 2026-09-21 00:00 |
07:45:18.18 |
+81:30:22.1 |
HIP 37961 |
11.13 |
| 2026-09-21 12:00 |
07:45:25.51 |
+81:30:52.3 |
HIP 37961 |
10.57 |
| 2026-09-22 00:00 |
07:45:32.72 |
+81:31:22.6 |
HIP 37961 |
10.01 |
| 2026-09-22 12:00 |
07:45:39.79 |
+81:31:53.0 |
HIP 37961 |
9.45 |
| 2026-09-23 00:00 |
07:45:46.74 |
+81:32:23.7 |
HIP 37961 |
8.89 |
| 2026-09-23 12:00 |
07:45:53.56 |
+81:32:54.4 |
HIP 37961 |
8.33 |
| 2026-09-24 00:00 |
07:46:00.25 |
+81:33:25.3 |
HIP 37961 |
7.77 |
| 2026-09-24 12:00 |
07:46:06.80 |
+81:33:56.4 |
HIP 37961 |
7.21 |
| 2026-09-25 00:00 |
07:46:13.23 |
+81:34:27.6 |
HIP 37961 |
6.65 |
| 2026-09-25 12:00 |
07:46:19.52 |
+81:34:59.0 |
HIP 37961 |
6.09 |
| 2026-09-26 00:00 |
07:46:25.67 |
+81:35:30.5 |
HIP 37961 |
5.53 |
| 2026-09-26 12:00 |
07:46:31.70 |
+81:36:02.2 |
HIP 37961 |
4.97 |
| 2026-09-27 00:00 |
07:46:37.58 |
+81:36:34.0 |
HIP 37961 |
4.42 |
| 2026-09-27 12:00 |
07:46:43.33 |
+81:37:05.9 |
HIP 37961 |
3.87 |
| 2026-09-28 00:00 |
07:46:48.95 |
+81:37:38.0 |
HIP 37961 |
3.32 |
| 2026-09-28 12:00 |
07:46:54.42 |
+81:38:10.2 |
HIP 37961 |
2.78 |
| 2026-09-29 00:00 |
07:46:59.76 |
+81:38:42.5 |
HIP 37961 |
2.25 |
| 2026-09-29 12:00 |
07:47:04.95 |
+81:39:15.0 |
HIP 37961 |
1.75 |
| 2026-09-30 00:00 |
07:47:10.01 |
+81:39:47.6 |
HIP 37961 |
1.31 |
| 2026-09-30 12:00 |
07:47:14.92 |
+81:40:20.4 |
HIP 37961 |
1.00 |
| 2026-10-01 00:00 |
07:47:19.69 |
+81:40:53.2 |
HIP 37961 |
0.97 |
| 2026-10-01 12:00 |
07:47:24.31 |
+81:41:26.2 |
HIP 37961 |
1.24 |
| 2026-10-02 00:00 |
07:47:28.79 |
+81:41:59.3 |
HIP 37961 |
1.66 |
| 2026-10-02 12:00 |
07:47:33.13 |
+81:42:32.6 |
HIP 37961 |
2.16 |
| 2026-10-03 00:00 |
07:47:37.32 |
+81:43:05.9 |
HIP 37961 |
2.68 |
| 2026-10-03 12:00 |
07:47:41.36 |
+81:43:39.4 |
HIP 37961 |
3.22 |
| 2026-10-04 00:00 |
07:47:45.25 |
+81:44:13.0 |
HIP 37961 |
3.77 |
| 2026-10-04 12:00 |
07:47:48.99 |
+81:44:46.7 |
HIP 37961 |
4.33 |
| 2026-10-05 00:00 |
07:47:52.58 |
+81:45:20.5 |
HIP 37961 |
4.89 |
| 2026-10-05 12:00 |
07:47:56.02 |
+81:45:54.5 |
HIP 37961 |
5.46 |
| 2026-10-06 00:00 |
07:47:59.31 |
+81:46:28.5 |
HIP 37961 |
6.02 |
| 2026-10-06 12:00 |
07:48:02.44 |
+81:47:02.6 |
HIP 37961 |
6.59 |
| 2026-10-07 00:00 |
07:48:05.42 |
+81:47:36.9 |
HIP 37961 |
7.16 |
| 2026-10-07 12:00 |
07:48:08.24 |
+81:48:11.2 |
HIP 37961 |
7.73 |
| 2026-10-08 00:00 |
07:48:10.90 |
+81:48:45.7 |
HIP 37961 |
8.30 |
| 2026-10-08 12:00 |
07:48:13.41 |
+81:49:20.2 |
HIP 37961 |
8.87 |
| 2026-10-09 00:00 |
07:48:15.76 |
+81:49:54.8 |
HIP 37961 |
9.44 |
| 2026-10-09 12:00 |
07:48:17.94 |
+81:50:29.5 |
HIP 37961 |
10.02 |
| 2026-10-10 00:00 |
07:48:19.97 |
+81:51:04.3 |
HIP 37961 |
10.59 |
| 2026-10-10 12:00 |
07:48:21.84 |
+81:51:39.2 |
HIP 37961 |
11.17 |
| 2026-10-11 00:00 |
07:48:23.54 |
+81:52:14.2 |
HIP 37961 |
11.74 |