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
$$
M_a = (12.410 + 2.328\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.410 |
| n |
2.328 |
| gf |
0.971 |
| gb |
-0.915 |
| k |
1.000 |
| δ90 |
9.377 |
| 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) |
| 2026-07-29 00:00 |
01:38:09.80 |
+23:43:23.3 |
HIP 7768 |
25.21 |
| 2026-07-29 12:00 |
01:38:09.14 |
+23:43:30.3 |
HIP 7768 |
25.35 |
| 2026-07-30 00:00 |
01:38:08.46 |
+23:43:37.2 |
HIP 7768 |
25.50 |
| 2026-07-30 12:00 |
01:38:07.75 |
+23:43:44.0 |
HIP 7768 |
25.66 |
| 2026-07-31 00:00 |
01:38:07.02 |
+23:43:50.6 |
HIP 7768 |
25.83 |
| 2026-07-31 12:00 |
01:38:06.27 |
+23:43:57.1 |
HIP 7768 |
25.99 |
| 2026-08-01 00:00 |
01:38:05.49 |
+23:44:03.4 |
HIP 7768 |
26.17 |
| 2026-08-01 12:00 |
01:38:04.68 |
+23:44:09.6 |
HIP 7768 |
26.35 |
| 2026-08-02 00:00 |
01:38:03.86 |
+23:44:15.7 |
HIP 7768 |
26.54 |
| 2026-08-02 12:00 |
01:38:03.01 |
+23:44:21.6 |
HIP 7768 |
26.73 |
| 2026-08-03 00:00 |
01:38:02.13 |
+23:44:27.4 |
HIP 7768 |
26.93 |
| 2026-08-03 12:00 |
01:38:01.23 |
+23:44:33.0 |
HIP 7768 |
27.14 |
| 2026-08-04 00:00 |
01:38:00.30 |
+23:44:38.5 |
HIP 7768 |
27.35 |
| 2026-08-04 12:00 |
01:37:59.36 |
+23:44:43.9 |
HIP 7768 |
27.56 |
| 2026-08-05 00:00 |
01:37:58.38 |
+23:44:49.1 |
HIP 7768 |
27.79 |
| 2026-08-05 12:00 |
01:37:57.39 |
+23:44:54.1 |
HIP 7768 |
28.01 |
| 2026-08-06 00:00 |
01:37:56.37 |
+23:44:59.0 |
HIP 7768 |
28.25 |
| 2026-08-06 12:00 |
01:37:55.32 |
+23:45:03.8 |
HIP 7768 |
28.49 |
| 2026-08-07 00:00 |
01:37:54.26 |
+23:45:08.4 |
HIP 7768 |
28.73 |
| 2026-08-07 12:00 |
01:37:53.16 |
+23:45:12.9 |
HIP 7768 |
28.99 |
| 2026-08-08 00:00 |
01:37:52.05 |
+23:45:17.2 |
HIP 7768 |
29.24 |
| 2026-08-08 12:00 |
01:37:50.91 |
+23:45:21.4 |
HIP 7768 |
29.50 |
| 2026-08-09 00:00 |
01:37:49.74 |
+23:45:25.5 |
HIP 7768 |
29.77 |
| 2026-08-09 12:00 |
01:37:48.56 |
+23:45:29.3 |
HIP 7768 |
30.04 |
| 2026-08-10 00:00 |
01:37:47.35 |
+23:45:33.1 |
HIP 7768 |
30.32 |
| 2026-08-10 12:00 |
01:37:46.11 |
+23:45:36.7 |
HIP 7768 |
30.61 |
| 2026-08-11 00:00 |
01:37:44.85 |
+23:45:40.1 |
HIP 7768 |
30.90 |
| 2026-08-11 12:00 |
01:37:43.57 |
+23:45:43.4 |
HIP 7768 |
31.19 |
| 2026-08-12 00:00 |
01:37:42.27 |
+23:45:46.5 |
HIP 7768 |
31.49 |
| 2026-08-12 12:00 |
01:37:40.94 |
+23:45:49.5 |
HIP 7768 |
31.80 |
| 2026-08-13 00:00 |
01:37:39.59 |
+23:45:52.3 |
HIP 7487 |
32.08 |
| 2026-08-13 12:00 |
01:37:38.21 |
+23:45:55.0 |
HIP 7487 |
31.88 |
| 2026-08-14 00:00 |
01:37:36.81 |
+23:45:57.5 |
HIP 7487 |
31.68 |
| 2026-08-14 12:00 |
01:37:35.39 |
+23:45:59.9 |
HIP 7487 |
31.48 |
| 2026-08-15 00:00 |
01:37:33.95 |
+23:46:02.1 |
HIP 7487 |
31.28 |
| 2026-08-15 12:00 |
01:37:32.48 |
+23:46:04.2 |
HIP 7487 |
31.08 |
| 2026-08-16 00:00 |
01:37:30.99 |
+23:46:06.1 |
HIP 7487 |
30.88 |
| 2026-08-16 12:00 |
01:37:29.48 |
+23:46:07.8 |
HIP 7487 |
30.69 |
| 2026-08-17 00:00 |
01:37:27.94 |
+23:46:09.4 |
HIP 7487 |
30.50 |
| 2026-08-17 12:00 |
01:37:26.38 |
+23:46:10.8 |
HIP 7487 |
30.31 |
| 2026-08-18 00:00 |
01:37:24.80 |
+23:46:12.1 |
HIP 7487 |
30.12 |
| 2026-08-18 12:00 |
01:37:23.20 |
+23:46:13.3 |
HIP 7487 |
29.94 |
| 2026-08-19 00:00 |
01:37:21.58 |
+23:46:14.2 |
HIP 7487 |
29.76 |