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) |
| 2026-09-20 00:00 |
01:34:57.06 |
+23:41:51.4 |
HIP 7255 |
21.23 |
| 2026-09-20 12:00 |
01:34:54.28 |
+23:41:42.3 |
HIP 7255 |
20.57 |
| 2026-09-21 00:00 |
01:34:51.48 |
+23:41:33.0 |
HIP 7255 |
19.92 |
| 2026-09-21 12:00 |
01:34:48.67 |
+23:41:23.6 |
HIP 7255 |
19.26 |
| 2026-09-22 00:00 |
01:34:45.85 |
+23:41:14.1 |
HIP 7255 |
18.59 |
| 2026-09-22 12:00 |
01:34:43.02 |
+23:41:04.4 |
HIP 7255 |
17.93 |
| 2026-09-23 00:00 |
01:34:40.17 |
+23:40:54.6 |
HIP 7255 |
17.26 |
| 2026-09-23 12:00 |
01:34:37.32 |
+23:40:44.6 |
HIP 7255 |
16.58 |
| 2026-09-24 00:00 |
01:34:34.45 |
+23:40:34.5 |
HIP 7255 |
15.91 |
| 2026-09-24 12:00 |
01:34:31.57 |
+23:40:24.3 |
HIP 7255 |
15.23 |
| 2026-09-25 00:00 |
01:34:28.69 |
+23:40:13.9 |
HIP 7255 |
14.55 |
| 2026-09-25 12:00 |
01:34:25.79 |
+23:40:03.4 |
HIP 7255 |
13.86 |
| 2026-09-26 00:00 |
01:34:22.88 |
+23:39:52.7 |
HIP 7255 |
13.18 |
| 2026-09-26 12:00 |
01:34:19.96 |
+23:39:41.9 |
HIP 7255 |
12.49 |
| 2026-09-27 00:00 |
01:34:17.03 |
+23:39:31.0 |
HIP 7255 |
11.79 |
| 2026-09-27 12:00 |
01:34:14.09 |
+23:39:19.9 |
HIP 7255 |
11.10 |
| 2026-09-28 00:00 |
01:34:11.15 |
+23:39:08.7 |
HIP 7255 |
10.40 |
| 2026-09-28 12:00 |
01:34:08.19 |
+23:38:57.3 |
HIP 7255 |
9.70 |
| 2026-09-29 00:00 |
01:34:05.22 |
+23:38:45.8 |
HIP 7255 |
9.00 |
| 2026-09-29 12:00 |
01:34:02.25 |
+23:38:34.2 |
HIP 7255 |
8.30 |
| 2026-09-30 00:00 |
01:33:59.27 |
+23:38:22.5 |
HIP 7255 |
7.59 |
| 2026-09-30 12:00 |
01:33:56.28 |
+23:38:10.6 |
HIP 7255 |
6.88 |
| 2026-10-01 00:00 |
01:33:53.28 |
+23:37:58.6 |
HIP 7255 |
6.17 |
| 2026-10-01 12:00 |
01:33:50.27 |
+23:37:46.4 |
HIP 7255 |
5.46 |
| 2026-10-02 00:00 |
01:33:47.25 |
+23:37:34.2 |
HIP 7255 |
4.75 |
| 2026-10-02 12:00 |
01:33:44.23 |
+23:37:21.7 |
HIP 7255 |
4.04 |
| 2026-10-03 00:00 |
01:33:41.20 |
+23:37:09.2 |
HIP 7255 |
3.34 |
| 2026-10-03 12:00 |
01:33:38.17 |
+23:36:56.5 |
HIP 7255 |
2.64 |
| 2026-10-04 00:00 |
01:33:35.12 |
+23:36:43.8 |
HIP 7255 |
1.96 |
| 2026-10-04 12:00 |
01:33:32.07 |
+23:36:30.8 |
HIP 7255 |
1.33 |
| 2026-10-05 00:00 |
01:33:29.01 |
+23:36:17.8 |
HIP 7255 |
0.87 |
| 2026-10-05 12:00 |
01:33:25.95 |
+23:36:04.6 |
HIP 7255 |
0.91 |
| 2026-10-06 00:00 |
01:33:22.88 |
+23:35:51.3 |
HIP 7255 |
1.40 |
| 2026-10-06 12:00 |
01:33:19.81 |
+23:35:37.9 |
HIP 7255 |
2.05 |
| 2026-10-07 00:00 |
01:33:16.73 |
+23:35:24.4 |
HIP 7255 |
2.75 |
| 2026-10-07 12:00 |
01:33:13.64 |
+23:35:10.7 |
HIP 7255 |
3.47 |
| 2026-10-08 00:00 |
01:33:10.55 |
+23:34:56.9 |
HIP 7255 |
4.19 |
| 2026-10-08 12:00 |
01:33:07.45 |
+23:34:43.0 |
HIP 7255 |
4.93 |
| 2026-10-09 00:00 |
01:33:04.35 |
+23:34:29.0 |
HIP 7255 |
5.66 |
| 2026-10-09 12:00 |
01:33:01.25 |
+23:34:14.9 |
HIP 7255 |
6.41 |
| 2026-10-10 00:00 |
01:32:58.14 |
+23:34:00.6 |
HIP 7255 |
7.15 |
| 2026-10-10 12:00 |
01:32:55.03 |
+23:33:46.3 |
HIP 7255 |
7.90 |
| 2026-10-11 00:00 |
01:32:51.91 |
+23:33:31.8 |
HIP 7217 |
8.34 |