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) |
| 2026-07-29 00:00 |
10:38:13.18 |
-02:21:13.9 |
HIP 52080 |
18.80 |
| 2026-07-29 12:00 |
10:38:35.99 |
-02:23:03.4 |
HIP 52176 |
14.82 |
| 2026-07-30 00:00 |
10:38:58.86 |
-02:24:53.6 |
HIP 52176 |
9.82 |
| 2026-07-30 12:00 |
10:39:21.77 |
-02:26:44.4 |
HIP 52176 |
6.74 |
| 2026-07-31 00:00 |
10:39:44.72 |
-02:28:36.0 |
HIP 52176 |
8.18 |
| 2026-07-31 12:00 |
10:40:07.72 |
-02:30:28.2 |
HIP 52176 |
12.71 |
| 2026-08-01 00:00 |
10:40:30.77 |
-02:32:21.2 |
HIP 52176 |
18.15 |
| 2026-08-01 12:00 |
10:40:53.85 |
-02:34:14.8 |
HIP 52176 |
23.91 |
| 2026-08-02 00:00 |
10:41:16.98 |
-02:36:09.0 |
HIP 52176 |
29.81 |
| 2026-08-02 12:00 |
10:41:40.16 |
-02:38:04.0 |
HIP 52409 |
32.01 |
| 2026-08-03 00:00 |
10:42:03.37 |
-02:39:59.6 |
HIP 52409 |
31.12 |
| 2026-08-03 12:00 |
10:42:26.63 |
-02:41:55.9 |
HIP 52409 |
31.42 |
| 2026-08-04 00:00 |
10:42:49.92 |
-02:43:52.9 |
HIP 52543 |
30.29 |
| 2026-08-04 12:00 |
10:43:13.26 |
-02:45:50.5 |
HIP 52543 |
26.68 |
| 2026-08-05 00:00 |
10:43:36.64 |
-02:47:48.8 |
HIP 52482 |
23.58 |
| 2026-08-05 12:00 |
10:44:00.05 |
-02:49:47.7 |
HIP 52482 |
21.75 |
| 2026-08-06 00:00 |
10:44:23.51 |
-02:51:47.3 |
HIP 52482 |
21.59 |
| 2026-08-06 12:00 |
10:44:47.00 |
-02:53:47.5 |
HIP 52482 |
23.14 |
| 2026-08-07 00:00 |
10:45:10.53 |
-02:55:48.4 |
HIP 52482 |
26.11 |
| 2026-08-07 12:00 |
10:45:34.10 |
-02:57:49.9 |
HIP 52482 |
30.08 |
| 2026-08-08 00:00 |
10:45:57.70 |
-02:59:52.1 |
HIP 52669 |
33.44 |
| 2026-08-08 12:00 |
10:46:21.34 |
-03:01:54.9 |
HIP 52857 |
35.31 |
| 2026-08-09 00:00 |
10:46:45.02 |
-03:03:58.3 |
HIP 52857 |
29.06 |
| 2026-08-09 12:00 |
10:47:08.73 |
-03:06:02.4 |
HIP 52857 |
22.81 |
| 2026-08-10 00:00 |
10:47:32.47 |
-03:08:07.0 |
HIP 52857 |
16.56 |
| 2026-08-10 12:00 |
10:47:56.25 |
-03:10:12.3 |
HIP 52857 |
10.33 |
| 2026-08-11 00:00 |
10:48:20.06 |
-03:12:18.2 |
HIP 52857 |
4.27 |
| 2026-08-11 12:00 |
10:48:43.90 |
-03:14:24.8 |
HIP 52857 |
3.06 |
| 2026-08-12 00:00 |
10:49:07.78 |
-03:16:31.9 |
HIP 52857 |
8.96 |
| 2026-08-12 12:00 |
10:49:31.68 |
-03:18:39.6 |
HIP 52857 |
15.22 |
| 2026-08-13 00:00 |
10:49:55.61 |
-03:20:48.0 |
HIP 52857 |
21.53 |
| 2026-08-13 12:00 |
10:50:19.58 |
-03:22:56.9 |
HIP 53035 |
20.82 |
| 2026-08-14 00:00 |
10:50:43.57 |
-03:25:06.4 |
HIP 53035 |
20.30 |
| 2026-08-14 12:00 |
10:51:07.59 |
-03:27:16.5 |
HIP 53093 |
15.13 |
| 2026-08-15 00:00 |
10:51:31.64 |
-03:29:27.2 |
HIP 53093 |
10.51 |
| 2026-08-15 12:00 |
10:51:55.72 |
-03:31:38.4 |
HIP 53093 |
8.58 |
| 2026-08-16 00:00 |
10:52:19.82 |
-03:33:50.2 |
HIP 53093 |
10.88 |
| 2026-08-16 12:00 |
10:52:43.94 |
-03:36:02.6 |
HIP 53093 |
15.66 |
| 2026-08-17 00:00 |
10:53:08.09 |
-03:38:15.5 |
HIP 53197 |
17.42 |
| 2026-08-17 12:00 |
10:53:32.27 |
-03:40:29.0 |
HIP 53197 |
18.09 |
| 2026-08-18 00:00 |
10:53:56.47 |
-03:42:43.1 |
HIP 53297 |
19.81 |
| 2026-08-18 12:00 |
10:54:20.69 |
-03:44:57.7 |
HIP 53297 |
18.20 |
| 2026-08-19 00:00 |
10:54:44.93 |
-03:47:12.8 |
HIP 53297 |
18.78 |