메타데이터
| 항목 |
값 |
| Designation |
C/2004 L1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-03-30T02:35:39.649920Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:41Z |
| Obs used |
410 |
| NEO |
- |
| M1 |
12.600 |
| K1 |
7.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2005-01-20.0000000 |
| e |
0.99761858 |
| q (au) |
2.047414 |
| a (au) |
859.745847 |
| i (deg) |
159.360856 |
| Ω (om, deg) |
66.174158 |
| ω (w, deg) |
243.579121 |
| M (ma, deg) |
359.997298 |
밝기
산란 + 전체 선형
$$
M_a = (12.412 + 2.327\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.412 |
| n |
2.327 |
| gf |
0.970 |
| gb |
-0.915 |
| k |
1.000 |
| δ90 |
9.345 |
| 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) |
| 2026-03-26 00:00 |
01:31:13.13 |
+22:42:55.7 |
HIP 7119 |
7.39 |
| 2026-03-26 12:00 |
01:31:15.68 |
+22:43:06.5 |
HIP 7119 |
6.77 |
| 2026-03-27 00:00 |
01:31:18.25 |
+22:43:17.5 |
HIP 7119 |
6.16 |
| 2026-03-27 12:00 |
01:31:20.82 |
+22:43:28.5 |
HIP 7119 |
5.54 |
| 2026-03-28 00:00 |
01:31:23.39 |
+22:43:39.7 |
HIP 7119 |
4.92 |
| 2026-03-28 12:00 |
01:31:25.98 |
+22:43:51.0 |
HIP 7119 |
4.30 |
| 2026-03-29 00:00 |
01:31:28.57 |
+22:44:02.4 |
HIP 7119 |
3.69 |
| 2026-03-29 12:00 |
01:31:31.17 |
+22:44:13.9 |
HIP 7119 |
3.07 |
| 2026-03-30 00:00 |
01:31:33.77 |
+22:44:25.5 |
HIP 7119 |
2.46 |
| 2026-03-30 12:00 |
01:31:36.38 |
+22:44:37.3 |
HIP 7119 |
1.87 |
| 2026-03-31 00:00 |
01:31:38.99 |
+22:44:49.1 |
HIP 7119 |
1.30 |
| 2026-03-31 12:00 |
01:31:41.62 |
+22:45:01.1 |
HIP 7119 |
0.85 |
| 2026-04-01 00:00 |
01:31:44.24 |
+22:45:13.1 |
HIP 7119 |
0.74 |
| 2026-04-01 12:00 |
01:31:46.88 |
+22:45:25.3 |
HIP 7119 |
1.10 |
| 2026-04-02 00:00 |
01:31:49.51 |
+22:45:37.6 |
HIP 7119 |
1.64 |
| 2026-04-02 12:00 |
01:31:52.16 |
+22:45:50.0 |
HIP 7119 |
2.24 |
| 2026-04-03 00:00 |
01:31:54.80 |
+22:46:02.5 |
HIP 7119 |
2.85 |
| 2026-04-03 12:00 |
01:31:57.46 |
+22:46:15.0 |
HIP 7119 |
3.48 |
| 2026-04-04 00:00 |
01:32:00.11 |
+22:46:27.7 |
HIP 7119 |
4.12 |
| 2026-04-04 12:00 |
01:32:02.77 |
+22:46:40.5 |
HIP 7119 |
4.76 |
| 2026-04-05 00:00 |
01:32:05.44 |
+22:46:53.4 |
HIP 7119 |
5.41 |
| 2026-04-05 12:00 |
01:32:08.11 |
+22:47:06.4 |
HIP 7119 |
6.05 |
| 2026-04-06 00:00 |
01:32:10.78 |
+22:47:19.5 |
HIP 7119 |
6.71 |
| 2026-04-06 12:00 |
01:32:13.46 |
+22:47:32.7 |
HIP 7119 |
7.36 |
| 2026-04-07 00:00 |
01:32:16.14 |
+22:47:46.0 |
HIP 7119 |
8.01 |
| 2026-04-07 12:00 |
01:32:18.82 |
+22:47:59.4 |
HIP 7119 |
8.67 |
| 2026-04-08 00:00 |
01:32:21.51 |
+22:48:12.8 |
HIP 7119 |
9.32 |
| 2026-04-08 12:00 |
01:32:24.19 |
+22:48:26.4 |
HIP 7119 |
9.98 |
| 2026-04-09 00:00 |
01:32:26.89 |
+22:48:40.1 |
HIP 7119 |
10.64 |
| 2026-04-09 12:00 |
01:32:29.58 |
+22:48:53.8 |
HIP 7119 |
11.30 |
| 2026-04-10 00:00 |
01:32:32.28 |
+22:49:07.7 |
HIP 7119 |
11.96 |
| 2026-04-10 12:00 |
01:32:34.97 |
+22:49:21.6 |
HIP 7119 |
12.63 |
| 2026-04-11 00:00 |
01:32:37.67 |
+22:49:35.6 |
HIP 7119 |
13.29 |
| 2026-04-11 12:00 |
01:32:40.38 |
+22:49:49.7 |
HIP 7119 |
13.96 |
| 2026-04-12 00:00 |
01:32:43.08 |
+22:50:03.9 |
HIP 7119 |
14.62 |
| 2026-04-12 12:00 |
01:32:45.78 |
+22:50:18.2 |
HIP 7119 |
15.29 |
| 2026-04-13 00:00 |
01:32:48.49 |
+22:50:32.6 |
HIP 7119 |
15.96 |
| 2026-04-13 12:00 |
01:32:51.20 |
+22:50:47.0 |
HIP 7119 |
16.63 |
| 2026-04-14 00:00 |
01:32:53.90 |
+22:51:01.6 |
HIP 7119 |
17.30 |
| 2026-04-14 12:00 |
01:32:56.61 |
+22:51:16.2 |
HIP 7119 |
17.96 |
| 2026-04-15 00:00 |
01:32:59.32 |
+22:51:30.9 |
HIP 7119 |
18.64 |
| 2026-04-15 12:00 |
01:33:02.03 |
+22:51:45.7 |
HIP 7119 |
19.31 |
| 2026-04-16 00:00 |
01:33:04.73 |
+22:52:00.6 |
HIP 7119 |
19.98 |