메타데이터
| 항목 |
값 |
| Designation |
51P/Harrington |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-08-12T09:52:15.983040Z |
| Orbit solution date (soln_date, UTC) |
2022-10-24T10:18:34Z |
| Obs used |
99 |
| NEO |
- |
| M1 |
18.600 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-06-21.0000000 |
| e |
0.54204517 |
| q (au) |
1.699112 |
| a (au) |
3.710217 |
| i (deg) |
5.423652 |
| Ω (om, deg) |
83.717710 |
| ω (w, deg) |
269.163564 |
| M (ma, deg) |
93.586186 |
밝기
산란 + 전체 선형
$$
M_a = (19.171 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
19.171 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.607 |
| k |
0.920 |
| 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 |
11:11:20.12 |
+11:17:09.3 |
HIP 54622 |
9.00 |
| 2026-06-01 12:00 |
11:11:23.34 |
+11:16:17.5 |
HIP 54622 |
9.39 |
| 2026-06-02 00:00 |
11:11:26.71 |
+11:15:24.8 |
HIP 54622 |
9.93 |
| 2026-06-02 12:00 |
11:11:30.23 |
+11:14:31.2 |
HIP 54622 |
10.62 |
| 2026-06-03 00:00 |
11:11:33.91 |
+11:13:36.7 |
HIP 54622 |
11.44 |
| 2026-06-03 12:00 |
11:11:37.74 |
+11:12:41.3 |
HIP 54714 |
10.34 |
| 2026-06-04 00:00 |
11:11:41.73 |
+11:11:45.1 |
HIP 54714 |
8.98 |
| 2026-06-04 12:00 |
11:11:45.87 |
+11:10:48.0 |
HIP 54714 |
7.60 |
| 2026-06-05 00:00 |
11:11:50.16 |
+11:09:50.0 |
HIP 54714 |
6.17 |
| 2026-06-05 12:00 |
11:11:54.60 |
+11:08:51.1 |
HIP 54714 |
4.71 |
| 2026-06-06 00:00 |
11:11:59.20 |
+11:07:51.4 |
HIP 54714 |
3.22 |
| 2026-06-06 12:00 |
11:12:03.94 |
+11:06:50.8 |
HIP 54714 |
1.69 |
| 2026-06-07 00:00 |
11:12:08.83 |
+11:05:49.4 |
HIP 54714 |
0.37 |
| 2026-06-07 12:00 |
11:12:13.87 |
+11:04:47.1 |
HIP 54714 |
1.57 |
| 2026-06-08 00:00 |
11:12:19.06 |
+11:03:43.9 |
HIP 54714 |
3.20 |
| 2026-06-08 12:00 |
11:12:24.40 |
+11:02:39.9 |
HIP 54714 |
4.88 |
| 2026-06-09 00:00 |
11:12:29.89 |
+11:01:35.1 |
HIP 54714 |
6.61 |
| 2026-06-09 12:00 |
11:12:35.52 |
+11:00:29.5 |
HIP 54714 |
8.36 |
| 2026-06-10 00:00 |
11:12:41.30 |
+10:59:23.0 |
HIP 54714 |
10.16 |
| 2026-06-10 12:00 |
11:12:47.22 |
+10:58:15.7 |
HIP 54714 |
11.99 |
| 2026-06-11 00:00 |
11:12:53.29 |
+10:57:07.6 |
HIP 54714 |
13.86 |
| 2026-06-11 12:00 |
11:12:59.50 |
+10:55:58.7 |
HIP 54714 |
15.77 |
| 2026-06-12 00:00 |
11:13:05.86 |
+10:54:49.0 |
HIP 54714 |
17.72 |
| 2026-06-12 12:00 |
11:13:12.36 |
+10:53:38.4 |
HIP 54714 |
19.69 |
| 2026-06-13 00:00 |
11:13:19.00 |
+10:52:27.1 |
HIP 54714 |
21.71 |
| 2026-06-13 12:00 |
11:13:25.79 |
+10:51:15.0 |
HIP 54714 |
23.76 |
| 2026-06-14 00:00 |
11:13:32.71 |
+10:50:02.0 |
HIP 54817 |
23.47 |
| 2026-06-14 12:00 |
11:13:39.78 |
+10:48:48.3 |
HIP 54817 |
22.60 |
| 2026-06-15 00:00 |
11:13:46.99 |
+10:47:33.8 |
HIP 54817 |
21.91 |
| 2026-06-15 12:00 |
11:13:54.33 |
+10:46:18.6 |
HIP 54817 |
21.41 |
| 2026-06-16 00:00 |
11:14:01.82 |
+10:45:02.6 |
HIP 54817 |
21.14 |
| 2026-06-16 12:00 |
11:14:09.44 |
+10:43:45.8 |
HIP 54817 |
21.12 |
| 2026-06-17 00:00 |
11:14:17.20 |
+10:42:28.2 |
HIP 54968 |
21.19 |
| 2026-06-17 12:00 |
11:14:25.09 |
+10:41:09.9 |
HIP 54968 |
20.75 |
| 2026-06-18 00:00 |
11:14:33.12 |
+10:39:50.9 |
HIP 54968 |
20.55 |
| 2026-06-18 12:00 |
11:14:41.29 |
+10:38:31.1 |
HIP 54968 |
20.63 |
| 2026-06-19 00:00 |
11:14:49.59 |
+10:37:10.6 |
HIP 54968 |
20.98 |
| 2026-06-19 12:00 |
11:14:58.02 |
+10:35:49.4 |
HIP 54968 |
21.60 |
| 2026-06-20 00:00 |
11:15:06.58 |
+10:34:27.4 |
HIP 54927 |
21.74 |
| 2026-06-20 12:00 |
11:15:15.27 |
+10:33:04.8 |
HIP 54927 |
20.83 |
| 2026-06-21 00:00 |
11:15:24.10 |
+10:31:41.4 |
HIP 54927 |
20.20 |
| 2026-06-21 12:00 |
11:15:33.05 |
+10:30:17.3 |
HIP 54927 |
19.89 |
| 2026-06-22 00:00 |
11:15:42.13 |
+10:28:52.6 |
HIP 54927 |
19.93 |