메타데이터
| 항목 |
값 |
| Designation |
307P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-12-20T02:14:44.448000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:19Z |
| Obs used |
220 |
| NEO |
- |
| M1 |
13.100 |
| K1 |
15.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-03-15.0000000 |
| e |
0.67474337 |
| q (au) |
1.888711 |
| a (au) |
5.806833 |
| i (deg) |
4.424845 |
| Ω (om, deg) |
158.120857 |
| ω (w, deg) |
222.112616 |
| M (ma, deg) |
314.562147 |
밝기
산란 + 전체 선형
$$
M_a = (12.505 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.505 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-0.912 |
| k |
1.000 |
| 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) |
| 2026-07-29 00:00 |
15:26:26.79 |
-13:56:40.3 |
HIP 75511 |
18.19 |
| 2026-07-29 12:00 |
15:26:25.55 |
-13:56:56.9 |
HIP 75511 |
18.16 |
| 2026-07-30 00:00 |
15:26:24.46 |
-13:57:14.1 |
HIP 75511 |
18.19 |
| 2026-07-30 12:00 |
15:26:23.53 |
-13:57:31.8 |
HIP 75511 |
18.25 |
| 2026-07-31 00:00 |
15:26:22.76 |
-13:57:50.2 |
HIP 75511 |
18.35 |
| 2026-07-31 12:00 |
15:26:22.14 |
-13:58:09.2 |
HIP 75511 |
18.49 |
| 2026-08-01 00:00 |
15:26:21.68 |
-13:58:28.8 |
HIP 75511 |
18.67 |
| 2026-08-01 12:00 |
15:26:21.37 |
-13:58:49.0 |
HIP 75511 |
18.88 |
| 2026-08-02 00:00 |
15:26:21.22 |
-13:59:09.7 |
HIP 75511 |
19.13 |
| 2026-08-02 12:00 |
15:26:21.22 |
-13:59:31.1 |
HIP 75511 |
19.41 |
| 2026-08-03 00:00 |
15:26:21.39 |
-13:59:53.0 |
HIP 75511 |
19.73 |
| 2026-08-03 12:00 |
15:26:21.70 |
-14:00:15.5 |
HIP 75511 |
20.08 |
| 2026-08-04 00:00 |
15:26:22.17 |
-14:00:38.6 |
HIP 75511 |
20.46 |
| 2026-08-04 12:00 |
15:26:22.80 |
-14:01:02.3 |
HIP 75511 |
20.86 |
| 2026-08-05 00:00 |
15:26:23.58 |
-14:01:26.5 |
HIP 75511 |
21.30 |
| 2026-08-05 12:00 |
15:26:24.52 |
-14:01:51.3 |
HIP 75511 |
21.77 |
| 2026-08-06 00:00 |
15:26:25.62 |
-14:02:16.7 |
HIP 75511 |
22.27 |
| 2026-08-06 12:00 |
15:26:26.86 |
-14:02:42.7 |
HIP 75511 |
22.80 |
| 2026-08-07 00:00 |
15:26:28.27 |
-14:03:09.3 |
HIP 75511 |
23.36 |
| 2026-08-07 12:00 |
15:26:29.83 |
-14:03:36.4 |
HIP 75511 |
23.95 |
| 2026-08-08 00:00 |
15:26:31.54 |
-14:04:04.1 |
HIP 75511 |
24.56 |
| 2026-08-08 12:00 |
15:26:33.41 |
-14:04:32.3 |
HIP 75511 |
25.21 |
| 2026-08-09 00:00 |
15:26:35.44 |
-14:05:01.1 |
HIP 75511 |
25.89 |
| 2026-08-09 12:00 |
15:26:37.62 |
-14:05:30.5 |
HIP 75511 |
26.59 |
| 2026-08-10 00:00 |
15:26:39.95 |
-14:06:00.4 |
HIP 75511 |
27.33 |
| 2026-08-10 12:00 |
15:26:42.44 |
-14:06:30.9 |
HIP 75511 |
28.10 |
| 2026-08-11 00:00 |
15:26:45.08 |
-14:07:01.9 |
HIP 75511 |
28.90 |
| 2026-08-11 12:00 |
15:26:47.88 |
-14:07:33.5 |
HIP 75511 |
29.73 |
| 2026-08-12 00:00 |
15:26:50.83 |
-14:08:05.6 |
HIP 75511 |
30.59 |
| 2026-08-12 12:00 |
15:26:53.94 |
-14:08:38.3 |
HIP 75511 |
31.49 |
| 2026-08-13 00:00 |
15:26:57.20 |
-14:09:11.5 |
HIP 75511 |
32.41 |
| 2026-08-13 12:00 |
15:27:00.61 |
-14:09:45.2 |
HIP 75659 |
33.05 |
| 2026-08-14 00:00 |
15:27:04.18 |
-14:10:19.5 |
HIP 75659 |
33.45 |
| 2026-08-14 12:00 |
15:27:07.90 |
-14:10:54.3 |
HIP 75659 |
33.87 |
| 2026-08-15 00:00 |
15:27:11.77 |
-14:11:29.6 |
HIP 75659 |
34.32 |
| 2026-08-15 12:00 |
15:27:15.79 |
-14:12:05.4 |
HIP 75659 |
34.81 |
| 2026-08-16 00:00 |
15:27:19.96 |
-14:12:41.8 |
HIP 75659 |
35.34 |
| 2026-08-16 12:00 |
15:27:24.29 |
-14:13:18.7 |
HIP 75659 |
35.90 |
| 2026-08-17 00:00 |
15:27:28.77 |
-14:13:56.0 |
HIP 75659 |
36.51 |
| 2026-08-17 12:00 |
15:27:33.39 |
-14:14:33.9 |
HIP 75659 |
37.16 |
| 2026-08-18 00:00 |
15:27:38.17 |
-14:15:12.3 |
HIP 75659 |
37.85 |
| 2026-08-18 12:00 |
15:27:43.10 |
-14:15:51.2 |
HIP 75659 |
38.58 |
| 2026-08-19 00:00 |
15:27:48.17 |
-14:16:30.6 |
HIP 75659 |
39.36 |