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) |
| 2026-05-12 00:00 |
01:35:20.46 |
+23:06:12.9 |
HIP 7390 |
2.80 |
| 2026-05-12 12:00 |
01:35:22.88 |
+23:06:30.3 |
HIP 7390 |
3.22 |
| 2026-05-13 00:00 |
01:35:25.30 |
+23:06:47.7 |
HIP 7390 |
3.70 |
| 2026-05-13 12:00 |
01:35:27.70 |
+23:07:05.2 |
HIP 7390 |
4.22 |
| 2026-05-14 00:00 |
01:35:30.10 |
+23:07:22.6 |
HIP 7390 |
4.76 |
| 2026-05-14 12:00 |
01:35:32.48 |
+23:07:40.1 |
HIP 7390 |
5.32 |
| 2026-05-15 00:00 |
01:35:34.86 |
+23:07:57.6 |
HIP 7390 |
5.89 |
| 2026-05-15 12:00 |
01:35:37.22 |
+23:08:15.0 |
HIP 7390 |
6.46 |
| 2026-05-16 00:00 |
01:35:39.57 |
+23:08:32.5 |
HIP 7390 |
7.04 |
| 2026-05-16 12:00 |
01:35:41.91 |
+23:08:50.0 |
HIP 7390 |
7.63 |
| 2026-05-17 00:00 |
01:35:44.24 |
+23:09:07.6 |
HIP 7390 |
8.22 |
| 2026-05-17 12:00 |
01:35:46.55 |
+23:09:25.1 |
HIP 7390 |
8.81 |
| 2026-05-18 00:00 |
01:35:48.86 |
+23:09:42.6 |
HIP 7390 |
9.39 |
| 2026-05-18 12:00 |
01:35:51.15 |
+23:10:00.1 |
HIP 7390 |
9.98 |
| 2026-05-19 00:00 |
01:35:53.43 |
+23:10:17.7 |
HIP 7390 |
10.57 |
| 2026-05-19 12:00 |
01:35:55.70 |
+23:10:35.2 |
HIP 7390 |
11.16 |
| 2026-05-20 00:00 |
01:35:57.95 |
+23:10:52.7 |
HIP 7390 |
11.74 |
| 2026-05-20 12:00 |
01:36:00.20 |
+23:11:10.2 |
HIP 7390 |
12.33 |
| 2026-05-21 00:00 |
01:36:02.42 |
+23:11:27.8 |
HIP 7390 |
12.91 |
| 2026-05-21 12:00 |
01:36:04.64 |
+23:11:45.3 |
HIP 7390 |
13.49 |
| 2026-05-22 00:00 |
01:36:06.84 |
+23:12:02.8 |
HIP 7390 |
14.07 |
| 2026-05-22 12:00 |
01:36:09.03 |
+23:12:20.3 |
HIP 7390 |
14.65 |
| 2026-05-23 00:00 |
01:36:11.21 |
+23:12:37.8 |
HIP 7390 |
15.22 |
| 2026-05-23 12:00 |
01:36:13.37 |
+23:12:55.4 |
HIP 7390 |
15.79 |
| 2026-05-24 00:00 |
01:36:15.52 |
+23:13:12.8 |
HIP 7390 |
16.36 |
| 2026-05-24 12:00 |
01:36:17.65 |
+23:13:30.3 |
HIP 7390 |
16.93 |
| 2026-05-25 00:00 |
01:36:19.77 |
+23:13:47.8 |
HIP 7390 |
17.50 |
| 2026-05-25 12:00 |
01:36:21.87 |
+23:14:05.2 |
HIP 7390 |
18.06 |
| 2026-05-26 00:00 |
01:36:23.96 |
+23:14:22.7 |
HIP 7390 |
18.62 |
| 2026-05-26 12:00 |
01:36:26.04 |
+23:14:40.1 |
HIP 7390 |
19.17 |
| 2026-05-27 00:00 |
01:36:28.10 |
+23:14:57.5 |
HIP 7570 |
19.56 |
| 2026-05-27 12:00 |
01:36:30.15 |
+23:15:14.9 |
HIP 7570 |
19.41 |
| 2026-05-28 00:00 |
01:36:32.18 |
+23:15:32.3 |
HIP 7570 |
19.27 |
| 2026-05-28 12:00 |
01:36:34.19 |
+23:15:49.7 |
HIP 7570 |
19.15 |
| 2026-05-29 00:00 |
01:36:36.19 |
+23:16:07.0 |
HIP 7570 |
19.05 |
| 2026-05-29 12:00 |
01:36:38.18 |
+23:16:24.3 |
HIP 7570 |
18.97 |
| 2026-05-30 00:00 |
01:36:40.15 |
+23:16:41.6 |
HIP 7570 |
18.90 |
| 2026-05-30 12:00 |
01:36:42.10 |
+23:16:58.9 |
HIP 7570 |
18.85 |
| 2026-05-31 00:00 |
01:36:44.04 |
+23:17:16.2 |
HIP 7570 |
18.82 |
| 2026-05-31 12:00 |
01:36:45.96 |
+23:17:33.4 |
HIP 7570 |
18.80 |
| 2026-06-01 00:00 |
01:36:47.87 |
+23:17:50.6 |
HIP 7570 |
18.80 |
| 2026-06-01 12:00 |
01:36:49.76 |
+23:18:07.7 |
HIP 7570 |
18.81 |
| 2026-06-02 00:00 |
01:36:51.63 |
+23:18:24.9 |
HIP 7570 |
18.85 |