메타데이터
| 항목 |
값 |
| Designation |
C/2004 L2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-11-15T02:27:00.152640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:42Z |
| Obs used |
303 |
| NEO |
- |
| M1 |
8.000 |
| K1 |
9.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2005-11-03.0000000 |
| e |
0.99521643 |
| q (au) |
3.778628 |
| a (au) |
789.918609 |
| i (deg) |
62.518634 |
| Ω (om, deg) |
99.180087 |
| ω (w, deg) |
257.311401 |
| M (ma, deg) |
359.999463 |
밝기
산란 + 전체 선형
$$
M_a = (9.775 + 2.485\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.775 |
| n |
2.485 |
| gf |
0.916 |
| gb |
-0.978 |
| k |
1.000 |
| δ90 |
9.940 |
| 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 |
09:03:35.72 |
+53:30:39.0 |
HIP 44300 |
19.96 |
| 2026-07-29 12:00 |
09:03:40.71 |
+53:30:27.6 |
HIP 44300 |
20.71 |
| 2026-07-30 00:00 |
09:03:45.71 |
+53:30:16.4 |
HIP 44300 |
21.47 |
| 2026-07-30 12:00 |
09:03:50.72 |
+53:30:05.4 |
HIP 44300 |
22.22 |
| 2026-07-31 00:00 |
09:03:55.72 |
+53:29:54.5 |
HIP 44300 |
22.98 |
| 2026-07-31 12:00 |
09:04:00.74 |
+53:29:43.9 |
HIP 44464 |
23.62 |
| 2026-08-01 00:00 |
09:04:05.75 |
+53:29:33.5 |
HIP 44464 |
23.60 |
| 2026-08-01 12:00 |
09:04:10.77 |
+53:29:23.3 |
HIP 44464 |
23.60 |
| 2026-08-02 00:00 |
09:04:15.79 |
+53:29:13.3 |
HIP 44464 |
23.63 |
| 2026-08-02 12:00 |
09:04:20.81 |
+53:29:03.5 |
HIP 44688 |
23.35 |
| 2026-08-03 00:00 |
09:04:25.83 |
+53:28:53.9 |
HIP 44688 |
22.66 |
| 2026-08-03 12:00 |
09:04:30.86 |
+53:28:44.5 |
HIP 44688 |
21.98 |
| 2026-08-04 00:00 |
09:04:35.89 |
+53:28:35.3 |
HIP 44688 |
21.31 |
| 2026-08-04 12:00 |
09:04:40.91 |
+53:28:26.3 |
HIP 44688 |
20.64 |
| 2026-08-05 00:00 |
09:04:45.94 |
+53:28:17.5 |
HIP 44688 |
19.99 |
| 2026-08-05 12:00 |
09:04:50.97 |
+53:28:08.9 |
HIP 44688 |
19.34 |
| 2026-08-06 00:00 |
09:04:56.00 |
+53:28:00.6 |
HIP 44688 |
18.71 |
| 2026-08-06 12:00 |
09:05:01.03 |
+53:27:52.4 |
HIP 44688 |
18.09 |
| 2026-08-07 00:00 |
09:05:06.06 |
+53:27:44.5 |
HIP 44688 |
17.48 |
| 2026-08-07 12:00 |
09:05:11.09 |
+53:27:36.7 |
HIP 44688 |
16.89 |
| 2026-08-08 00:00 |
09:05:16.12 |
+53:27:29.2 |
HIP 44688 |
16.32 |
| 2026-08-08 12:00 |
09:05:21.14 |
+53:27:21.9 |
HIP 44688 |
15.76 |
| 2026-08-09 00:00 |
09:05:26.17 |
+53:27:14.8 |
HIP 44688 |
15.23 |
| 2026-08-09 12:00 |
09:05:31.19 |
+53:27:07.9 |
HIP 44688 |
14.71 |
| 2026-08-10 00:00 |
09:05:36.21 |
+53:27:01.2 |
HIP 44688 |
14.23 |
| 2026-08-10 12:00 |
09:05:41.23 |
+53:26:54.8 |
HIP 44688 |
13.77 |
| 2026-08-11 00:00 |
09:05:46.25 |
+53:26:48.6 |
HIP 44688 |
13.34 |
| 2026-08-11 12:00 |
09:05:51.26 |
+53:26:42.5 |
HIP 44688 |
12.94 |
| 2026-08-12 00:00 |
09:05:56.27 |
+53:26:36.7 |
HIP 44688 |
12.58 |
| 2026-08-12 12:00 |
09:06:01.28 |
+53:26:31.2 |
HIP 44688 |
12.26 |
| 2026-08-13 00:00 |
09:06:06.28 |
+53:26:25.8 |
HIP 44688 |
11.99 |
| 2026-08-13 12:00 |
09:06:11.27 |
+53:26:20.7 |
HIP 44688 |
11.76 |
| 2026-08-14 00:00 |
09:06:16.27 |
+53:26:15.8 |
HIP 44688 |
11.57 |
| 2026-08-14 12:00 |
09:06:21.25 |
+53:26:11.1 |
HIP 44688 |
11.44 |
| 2026-08-15 00:00 |
09:06:26.24 |
+53:26:06.6 |
HIP 44688 |
11.36 |
| 2026-08-15 12:00 |
09:06:31.21 |
+53:26:02.4 |
HIP 44688 |
11.33 |
| 2026-08-16 00:00 |
09:06:36.18 |
+53:25:58.3 |
HIP 44688 |
11.35 |
| 2026-08-16 12:00 |
09:06:41.15 |
+53:25:54.5 |
HIP 44688 |
11.43 |
| 2026-08-17 00:00 |
09:06:46.11 |
+53:25:51.0 |
HIP 44688 |
11.55 |
| 2026-08-17 12:00 |
09:06:51.06 |
+53:25:47.6 |
HIP 44688 |
11.73 |
| 2026-08-18 00:00 |
09:06:56.00 |
+53:25:44.5 |
HIP 44688 |
11.95 |
| 2026-08-18 12:00 |
09:07:00.94 |
+53:25:41.6 |
HIP 44688 |
12.22 |
| 2026-08-19 00:00 |
09:07:05.86 |
+53:25:38.9 |
HIP 44688 |
12.52 |