메타데이터
| 항목 |
값 |
| Designation |
P/2014 M4 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-12-27T14:02:39.793920Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:56Z |
| Obs used |
87 |
| NEO |
- |
| M1 |
16.600 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-09-16.0000000 |
| e |
0.59553911 |
| q (au) |
2.351457 |
| a (au) |
5.813805 |
| i (deg) |
3.345156 |
| Ω (om, deg) |
265.062268 |
| ω (w, deg) |
145.270395 |
| M (ma, deg) |
352.787298 |
밝기
산란 + 전체 선형
$$
M_a = (15.730 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.730 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
18:35:33.17 |
-22:26:52.8 |
HIP 91083 |
13.40 |
| 2026-06-01 12:00 |
18:35:20.71 |
-22:26:56.5 |
HIP 91083 |
10.86 |
| 2026-06-02 00:00 |
18:35:08.13 |
-22:27:00.1 |
HIP 91083 |
8.52 |
| 2026-06-02 12:00 |
18:34:55.44 |
-22:27:03.9 |
HIP 91083 |
6.62 |
| 2026-06-03 00:00 |
18:34:42.65 |
-22:27:07.7 |
HIP 91083 |
5.68 |
| 2026-06-03 12:00 |
18:34:29.76 |
-22:27:11.5 |
HIP 91083 |
6.19 |
| 2026-06-04 00:00 |
18:34:16.76 |
-22:27:15.3 |
HIP 91083 |
7.90 |
| 2026-06-04 12:00 |
18:34:03.66 |
-22:27:19.2 |
HIP 91083 |
10.24 |
| 2026-06-05 00:00 |
18:33:50.46 |
-22:27:23.2 |
HIP 90966 |
11.84 |
| 2026-06-05 12:00 |
18:33:37.16 |
-22:27:27.1 |
HIP 90966 |
10.39 |
| 2026-06-06 00:00 |
18:33:23.76 |
-22:27:31.1 |
HIP 90966 |
9.72 |
| 2026-06-06 12:00 |
18:33:10.27 |
-22:27:35.1 |
HIP 90966 |
10.02 |
| 2026-06-07 00:00 |
18:32:56.68 |
-22:27:39.1 |
HIP 90966 |
11.22 |
| 2026-06-07 12:00 |
18:32:43.01 |
-22:27:43.2 |
HIP 90966 |
13.10 |
| 2026-06-08 00:00 |
18:32:29.24 |
-22:27:47.3 |
HIP 90966 |
15.41 |
| 2026-06-08 12:00 |
18:32:15.38 |
-22:27:51.3 |
HIP 90966 |
18.01 |
| 2026-06-09 00:00 |
18:32:01.43 |
-22:27:55.4 |
HIP 90966 |
20.80 |
| 2026-06-09 12:00 |
18:31:47.40 |
-22:27:59.6 |
HIP 90966 |
23.71 |
| 2026-06-10 00:00 |
18:31:33.28 |
-22:28:03.7 |
HIP 90872 |
26.39 |
| 2026-06-10 12:00 |
18:31:19.09 |
-22:28:07.8 |
HIP 90872 |
27.78 |
| 2026-06-11 00:00 |
18:31:04.81 |
-22:28:12.0 |
HIP 90631 |
27.34 |
| 2026-06-11 12:00 |
18:30:50.45 |
-22:28:16.1 |
HIP 90631 |
24.94 |
| 2026-06-12 00:00 |
18:30:36.02 |
-22:28:20.3 |
HIP 90631 |
22.76 |
| 2026-06-12 12:00 |
18:30:21.51 |
-22:28:24.4 |
HIP 90631 |
20.87 |
| 2026-06-13 00:00 |
18:30:06.93 |
-22:28:28.6 |
HIP 90631 |
19.39 |
| 2026-06-13 12:00 |
18:29:52.28 |
-22:28:32.7 |
HIP 90631 |
18.40 |
| 2026-06-14 00:00 |
18:29:37.56 |
-22:28:36.8 |
HIP 90631 |
18.01 |
| 2026-06-14 12:00 |
18:29:22.77 |
-22:28:41.0 |
HIP 90631 |
18.25 |
| 2026-06-15 00:00 |
18:29:07.92 |
-22:28:45.1 |
HIP 90631 |
19.12 |
| 2026-06-15 12:00 |
18:28:53.00 |
-22:28:49.2 |
HIP 90631 |
20.54 |
| 2026-06-16 00:00 |
18:28:38.03 |
-22:28:53.3 |
HIP 90451 |
17.60 |
| 2026-06-16 12:00 |
18:28:23.00 |
-22:28:57.3 |
HIP 90451 |
14.17 |
| 2026-06-17 00:00 |
18:28:07.91 |
-22:29:01.4 |
HIP 90451 |
10.76 |
| 2026-06-17 12:00 |
18:27:52.76 |
-22:29:05.4 |
HIP 90451 |
7.41 |
| 2026-06-18 00:00 |
18:27:37.57 |
-22:29:09.4 |
HIP 90451 |
4.29 |
| 2026-06-18 12:00 |
18:27:22.33 |
-22:29:13.4 |
HIP 90451 |
2.56 |
| 2026-06-19 00:00 |
18:27:07.03 |
-22:29:17.3 |
HIP 90451 |
4.42 |
| 2026-06-19 12:00 |
18:26:51.70 |
-22:29:21.2 |
HIP 90451 |
7.59 |
| 2026-06-20 00:00 |
18:26:36.32 |
-22:29:25.1 |
HIP 90451 |
11.00 |
| 2026-06-20 12:00 |
18:26:20.90 |
-22:29:28.9 |
HIP 90451 |
14.49 |
| 2026-06-21 00:00 |
18:26:05.44 |
-22:29:32.7 |
HIP 90451 |
18.02 |
| 2026-06-21 12:00 |
18:25:49.94 |
-22:29:36.5 |
HIP 90451 |
21.57 |
| 2026-06-22 00:00 |
18:25:34.42 |
-22:29:40.2 |
HIP 90451 |
25.13 |