메타데이터
| 항목 |
값 |
| Designation |
347P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-09-11T07:07:18.474240Z |
| Orbit solution date (soln_date, UTC) |
2025-11-13T12:12:47Z |
| Obs used |
309 |
| NEO |
- |
| M1 |
17.400 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-06-17.0000000 |
| e |
0.38472732 |
| q (au) |
2.220496 |
| a (au) |
3.608962 |
| i (deg) |
11.747463 |
| Ω (om, deg) |
261.053847 |
| ω (w, deg) |
98.301249 |
| M (ma, deg) |
145.008703 |
밝기
산란 + 전체 선형
$$
M_a = (13.237 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.237 |
| n |
6.000 |
| 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) |
| 2026-03-26 00:00 |
10:02:10.64 |
-03:01:10.1 |
HIP 49126 |
10.89 |
| 2026-03-26 12:00 |
10:01:57.94 |
-02:59:07.9 |
HIP 49126 |
7.14 |
| 2026-03-27 00:00 |
10:01:45.41 |
-02:57:05.9 |
HIP 49126 |
3.49 |
| 2026-03-27 12:00 |
10:01:33.07 |
-02:55:04.1 |
HIP 49126 |
1.02 |
| 2026-03-28 00:00 |
10:01:20.89 |
-02:53:02.7 |
HIP 49126 |
4.10 |
| 2026-03-28 12:00 |
10:01:08.90 |
-02:51:01.6 |
HIP 49126 |
7.65 |
| 2026-03-29 00:00 |
10:00:57.09 |
-02:49:00.9 |
HIP 49126 |
11.20 |
| 2026-03-29 12:00 |
10:00:45.47 |
-02:47:00.4 |
HIP 49126 |
14.72 |
| 2026-03-30 00:00 |
10:00:34.02 |
-02:45:00.4 |
HIP 49126 |
18.20 |
| 2026-03-30 12:00 |
10:00:22.76 |
-02:43:00.8 |
HIP 49126 |
21.64 |
| 2026-03-31 00:00 |
10:00:11.69 |
-02:41:01.5 |
HIP 49126 |
25.04 |
| 2026-03-31 12:00 |
10:00:00.80 |
-02:39:02.7 |
HIP 48935 |
26.67 |
| 2026-04-01 00:00 |
09:59:50.10 |
-02:37:04.3 |
HIP 48935 |
27.05 |
| 2026-04-01 12:00 |
09:59:39.58 |
-02:35:06.4 |
HIP 48935 |
27.83 |
| 2026-04-02 00:00 |
09:59:29.26 |
-02:33:08.9 |
HIP 48935 |
28.96 |
| 2026-04-02 12:00 |
09:59:19.13 |
-02:31:11.9 |
HIP 48935 |
30.40 |
| 2026-04-03 00:00 |
09:59:09.19 |
-02:29:15.5 |
HIP 48935 |
32.09 |
| 2026-04-03 12:00 |
09:58:59.44 |
-02:27:19.5 |
HIP 48935 |
33.97 |
| 2026-04-04 00:00 |
09:58:49.88 |
-02:25:24.1 |
HIP 48760 |
32.17 |
| 2026-04-04 12:00 |
09:58:40.52 |
-02:23:29.2 |
HIP 48760 |
29.46 |
| 2026-04-05 00:00 |
09:58:31.36 |
-02:21:34.8 |
HIP 48760 |
26.86 |
| 2026-04-05 12:00 |
09:58:22.39 |
-02:19:41.1 |
HIP 48847 |
24.36 |
| 2026-04-06 00:00 |
09:58:13.61 |
-02:17:47.9 |
HIP 48847 |
21.88 |
| 2026-04-06 12:00 |
09:58:05.04 |
-02:15:55.4 |
HIP 48847 |
19.53 |
| 2026-04-07 00:00 |
09:57:56.66 |
-02:14:03.5 |
HIP 48847 |
17.35 |
| 2026-04-07 12:00 |
09:57:48.48 |
-02:12:12.2 |
HIP 48847 |
15.38 |
| 2026-04-08 00:00 |
09:57:40.50 |
-02:10:21.5 |
HIP 48847 |
13.68 |
| 2026-04-08 12:00 |
09:57:32.72 |
-02:08:31.5 |
HIP 48839 |
12.34 |
| 2026-04-09 00:00 |
09:57:25.14 |
-02:06:42.2 |
HIP 48839 |
11.22 |
| 2026-04-09 12:00 |
09:57:17.77 |
-02:04:53.6 |
HIP 48839 |
10.63 |
| 2026-04-10 00:00 |
09:57:10.59 |
-02:03:05.7 |
HIP 48839 |
10.61 |
| 2026-04-10 12:00 |
09:57:03.62 |
-02:01:18.4 |
HIP 48839 |
11.15 |
| 2026-04-11 00:00 |
09:56:56.85 |
-01:59:32.0 |
HIP 48839 |
12.14 |
| 2026-04-11 12:00 |
09:56:50.28 |
-01:57:46.2 |
HIP 48839 |
13.46 |
| 2026-04-12 00:00 |
09:56:43.92 |
-01:56:01.3 |
HIP 48839 |
14.99 |
| 2026-04-12 12:00 |
09:56:37.77 |
-01:54:17.0 |
HIP 48839 |
16.67 |
| 2026-04-13 00:00 |
09:56:31.81 |
-01:52:33.6 |
HIP 48839 |
18.44 |
| 2026-04-13 12:00 |
09:56:26.07 |
-01:50:51.0 |
HIP 48839 |
20.25 |
| 2026-04-14 00:00 |
09:56:20.53 |
-01:49:09.2 |
HIP 48839 |
22.09 |
| 2026-04-14 12:00 |
09:56:15.19 |
-01:47:28.1 |
HIP 48839 |
23.94 |
| 2026-04-15 00:00 |
09:56:10.06 |
-01:45:48.0 |
HIP 48839 |
25.78 |
| 2026-04-15 12:00 |
09:56:05.14 |
-01:44:08.6 |
HIP 48644 |
25.59 |
| 2026-04-16 00:00 |
09:56:00.43 |
-01:42:30.1 |
HIP 48644 |
23.57 |