메타데이터
| 항목 |
값 |
| Designation |
251P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2004-06-19T01:47:38.279040Z |
| Orbit solution date (soln_date, UTC) |
2024-10-05T23:12:40Z |
| Obs used |
431 |
| NEO |
- |
| M1 |
12.000 |
| K1 |
24.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2007-04-11.0000000 |
| e |
0.50982311 |
| q (au) |
1.711672 |
| a (au) |
3.491948 |
| i (deg) |
23.507154 |
| Ω (om, deg) |
219.552911 |
| ω (w, deg) |
30.906733 |
| M (ma, deg) |
154.959455 |
밝기
산란 + 전체 선형
$$
M_a = (15.255 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.255 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.719 |
| k |
0.978 |
| δ90 |
10.000 |
| 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 |
03:03:16.42 |
+14:29:45.4 |
HIP 14236 |
4.36 |
| 2026-05-12 12:00 |
03:03:42.92 |
+14:30:54.6 |
HIP 14236 |
3.53 |
| 2026-05-13 00:00 |
03:04:09.42 |
+14:32:03.5 |
HIP 14236 |
9.53 |
| 2026-05-13 12:00 |
03:04:35.91 |
+14:33:11.9 |
HIP 14236 |
15.93 |
| 2026-05-14 00:00 |
03:05:02.38 |
+14:34:20.0 |
HIP 14404 |
21.32 |
| 2026-05-14 12:00 |
03:05:28.85 |
+14:35:27.8 |
HIP 14404 |
19.93 |
| 2026-05-15 00:00 |
03:05:55.30 |
+14:36:35.1 |
HIP 14404 |
20.61 |
| 2026-05-15 12:00 |
03:06:21.75 |
+14:37:42.1 |
HIP 14404 |
23.16 |
| 2026-05-16 00:00 |
03:06:48.17 |
+14:38:48.7 |
HIP 14404 |
27.05 |
| 2026-05-16 12:00 |
03:07:14.59 |
+14:39:55.0 |
HIP 14404 |
31.80 |
| 2026-05-17 00:00 |
03:07:40.99 |
+14:41:00.8 |
HIP 14497 |
31.72 |
| 2026-05-17 12:00 |
03:08:07.37 |
+14:42:06.2 |
HIP 14497 |
32.47 |
| 2026-05-18 00:00 |
03:08:33.74 |
+14:43:11.3 |
HIP 14497 |
34.44 |
| 2026-05-18 12:00 |
03:09:00.09 |
+14:44:15.9 |
HIP 14614 |
36.06 |
| 2026-05-19 00:00 |
03:09:26.42 |
+14:45:20.1 |
HIP 14614 |
36.24 |
| 2026-05-19 12:00 |
03:09:52.74 |
+14:46:24.0 |
HIP 14705 |
36.08 |
| 2026-05-20 00:00 |
03:10:19.04 |
+14:47:27.4 |
HIP 14909 |
33.94 |
| 2026-05-20 12:00 |
03:10:45.31 |
+14:48:30.4 |
HIP 14909 |
27.85 |
| 2026-05-21 00:00 |
03:11:11.57 |
+14:49:33.0 |
HIP 14909 |
21.97 |
| 2026-05-21 12:00 |
03:11:37.80 |
+14:50:35.1 |
HIP 14909 |
16.51 |
| 2026-05-22 00:00 |
03:12:04.01 |
+14:51:36.9 |
HIP 14909 |
12.05 |
| 2026-05-22 12:00 |
03:12:30.20 |
+14:52:38.2 |
HIP 14909 |
10.01 |
| 2026-05-23 00:00 |
03:12:56.37 |
+14:53:39.0 |
HIP 14909 |
11.72 |
| 2026-05-23 12:00 |
03:13:22.51 |
+14:54:39.5 |
HIP 14909 |
16.01 |
| 2026-05-24 00:00 |
03:13:48.63 |
+14:55:39.5 |
HIP 15137 |
19.30 |
| 2026-05-24 12:00 |
03:14:14.73 |
+14:56:39.0 |
HIP 15137 |
13.22 |
| 2026-05-25 00:00 |
03:14:40.80 |
+14:57:38.2 |
HIP 15137 |
7.64 |
| 2026-05-25 12:00 |
03:15:06.84 |
+14:58:36.9 |
HIP 15137 |
4.83 |
| 2026-05-26 00:00 |
03:15:32.85 |
+14:59:35.1 |
HIP 15137 |
8.31 |
| 2026-05-26 12:00 |
03:15:58.84 |
+15:00:32.9 |
HIP 15137 |
13.98 |
| 2026-05-27 00:00 |
03:16:24.80 |
+15:01:30.2 |
HIP 15137 |
20.05 |
| 2026-05-27 12:00 |
03:16:50.73 |
+15:02:27.1 |
HIP 15283 |
22.52 |
| 2026-05-28 00:00 |
03:17:16.64 |
+15:03:23.5 |
HIP 15394 |
18.51 |
| 2026-05-28 12:00 |
03:17:42.51 |
+15:04:19.5 |
HIP 15394 |
12.51 |
| 2026-05-29 00:00 |
03:18:08.35 |
+15:05:15.0 |
HIP 15394 |
7.08 |
| 2026-05-29 12:00 |
03:18:34.17 |
+15:06:10.0 |
HIP 15394 |
4.83 |
| 2026-05-30 00:00 |
03:18:59.95 |
+15:07:04.6 |
HIP 15394 |
8.70 |
| 2026-05-30 12:00 |
03:19:25.70 |
+15:07:58.7 |
HIP 15394 |
14.39 |
| 2026-05-31 00:00 |
03:19:51.42 |
+15:08:52.3 |
HIP 15536 |
19.25 |
| 2026-05-31 12:00 |
03:20:17.10 |
+15:09:45.5 |
HIP 15536 |
19.81 |
| 2026-06-01 00:00 |
03:20:42.75 |
+15:10:38.1 |
HIP 15536 |
22.20 |
| 2026-06-01 12:00 |
03:21:08.37 |
+15:11:30.3 |
HIP 15536 |
25.89 |
| 2026-06-02 00:00 |
03:21:33.95 |
+15:12:22.1 |
HIP 15536 |
30.42 |