메타데이터
| 항목 |
값 |
| Designation |
77P/Longmore |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-05-14T10:40:08.040000Z |
| Orbit solution date (soln_date, UTC) |
2025-10-29T22:11:34Z |
| Obs used |
2629 |
| NEO |
- |
| M1 |
9.300 |
| K1 |
14.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-02-05.0000000 |
| e |
0.35416745 |
| q (au) |
2.333302 |
| a (au) |
3.612860 |
| i (deg) |
24.340171 |
| Ω (om, deg) |
14.886903 |
| ω (w, deg) |
196.946173 |
| M (ma, deg) |
240.954013 |
밝기
산란 + 전체 선형
$$
M_a = (8.016 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.016 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.866 |
| 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) |
| 2026-06-01 00:00 |
01:49:24.70 |
+14:42:53.4 |
HIP 8539 |
23.95 |
| 2026-06-01 12:00 |
01:49:45.59 |
+14:45:49.6 |
HIP 8539 |
25.22 |
| 2026-06-02 00:00 |
01:50:06.41 |
+14:48:45.4 |
HIP 8568 |
24.03 |
| 2026-06-02 12:00 |
01:50:27.17 |
+14:51:41.0 |
HIP 8568 |
20.43 |
| 2026-06-03 00:00 |
01:50:47.86 |
+14:54:36.2 |
HIP 8568 |
18.01 |
| 2026-06-03 12:00 |
01:51:08.48 |
+14:57:31.1 |
HIP 8568 |
17.27 |
| 2026-06-04 00:00 |
01:51:29.03 |
+15:00:25.8 |
HIP 8568 |
18.39 |
| 2026-06-04 12:00 |
01:51:49.51 |
+15:03:20.1 |
HIP 8795 |
20.85 |
| 2026-06-05 00:00 |
01:52:09.93 |
+15:06:14.1 |
HIP 8795 |
18.72 |
| 2026-06-05 12:00 |
01:52:30.27 |
+15:09:07.8 |
HIP 8795 |
18.22 |
| 2026-06-06 00:00 |
01:52:50.54 |
+15:12:01.1 |
HIP 8810 |
15.11 |
| 2026-06-06 12:00 |
01:53:10.74 |
+15:14:54.2 |
HIP 8810 |
11.13 |
| 2026-06-07 00:00 |
01:53:30.86 |
+15:17:46.9 |
HIP 8810 |
9.15 |
| 2026-06-07 12:00 |
01:53:50.91 |
+15:20:39.3 |
HIP 8810 |
10.33 |
| 2026-06-08 00:00 |
01:54:10.89 |
+15:23:31.4 |
HIP 8810 |
13.87 |
| 2026-06-08 12:00 |
01:54:30.78 |
+15:26:23.2 |
HIP 8947 |
12.13 |
| 2026-06-09 00:00 |
01:54:50.61 |
+15:29:14.6 |
HIP 8947 |
10.53 |
| 2026-06-09 12:00 |
01:55:10.35 |
+15:32:05.7 |
HIP 8947 |
11.69 |
| 2026-06-10 00:00 |
01:55:30.02 |
+15:34:56.5 |
HIP 8947 |
14.95 |
| 2026-06-10 12:00 |
01:55:49.61 |
+15:37:46.9 |
HIP 8947 |
19.27 |
| 2026-06-11 00:00 |
01:56:09.11 |
+15:40:37.0 |
HIP 9076 |
23.51 |
| 2026-06-11 12:00 |
01:56:28.54 |
+15:43:26.8 |
HIP 9076 |
19.20 |
| 2026-06-12 00:00 |
01:56:47.88 |
+15:46:16.2 |
HIP 9076 |
15.64 |
| 2026-06-12 12:00 |
01:57:07.14 |
+15:49:05.2 |
HIP 9076 |
13.41 |
| 2026-06-13 00:00 |
01:57:26.31 |
+15:51:54.0 |
HIP 9076 |
13.18 |
| 2026-06-13 12:00 |
01:57:45.40 |
+15:54:42.3 |
HIP 9229 |
12.80 |
| 2026-06-14 00:00 |
01:58:04.41 |
+15:57:30.3 |
HIP 9229 |
8.36 |
| 2026-06-14 12:00 |
01:58:23.33 |
+16:00:18.0 |
HIP 9229 |
5.78 |
| 2026-06-15 00:00 |
01:58:42.15 |
+16:03:05.3 |
HIP 9229 |
7.33 |
| 2026-06-15 12:00 |
01:59:00.89 |
+16:05:52.2 |
HIP 9229 |
11.42 |
| 2026-06-16 00:00 |
01:59:19.54 |
+16:08:38.8 |
HIP 9328 |
12.93 |
| 2026-06-16 12:00 |
01:59:38.10 |
+16:11:25.0 |
HIP 9328 |
14.09 |
| 2026-06-17 00:00 |
01:59:56.57 |
+16:14:10.8 |
HIP 9328 |
16.87 |
| 2026-06-17 12:00 |
02:00:14.94 |
+16:16:56.2 |
HIP 9328 |
20.62 |
| 2026-06-18 00:00 |
02:00:33.22 |
+16:19:41.3 |
HIP 9434 |
16.71 |
| 2026-06-18 12:00 |
02:00:51.41 |
+16:22:26.0 |
HIP 9434 |
12.29 |
| 2026-06-19 00:00 |
02:01:09.50 |
+16:25:10.3 |
HIP 9434 |
8.74 |
| 2026-06-19 12:00 |
02:01:27.49 |
+16:27:54.3 |
HIP 9434 |
7.36 |
| 2026-06-20 00:00 |
02:01:45.39 |
+16:30:37.9 |
HIP 9434 |
9.14 |
| 2026-06-20 12:00 |
02:02:03.18 |
+16:33:21.0 |
HIP 9434 |
12.81 |
| 2026-06-21 00:00 |
02:02:20.88 |
+16:36:03.8 |
HIP 9434 |
17.17 |
| 2026-06-21 12:00 |
02:02:38.48 |
+16:38:46.3 |
HIP 9434 |
21.80 |
| 2026-06-22 00:00 |
02:02:55.98 |
+16:41:28.3 |
HIP 9434 |
26.54 |