메타데이터
| 항목 |
값 |
| Designation |
P/2016 P1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-09-08T07:16:06.602880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:26Z |
| Obs used |
40 |
| NEO |
- |
| M1 |
15.500 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2016-08-06.0000000 |
| e |
0.29419825 |
| q (au) |
2.279185 |
| a (au) |
3.229214 |
| i (deg) |
25.706555 |
| Ω (om, deg) |
319.536773 |
| ω (w, deg) |
267.536803 |
| M (ma, deg) |
56.507743 |
밝기
산란 + 전체 선형
$$
M_a = (20.000 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
20.000 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.843 |
| k |
0.985 |
| δ90 |
9.996 |
| 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 |
09:36:43.11 |
+10:13:05.7 |
HIP 47072 |
16.99 |
| 2026-07-29 12:00 |
09:37:25.48 |
+10:07:29.1 |
HIP 47072 |
28.39 |
| 2026-07-30 00:00 |
09:38:07.88 |
+10:01:51.7 |
HIP 47325 |
25.24 |
| 2026-07-30 12:00 |
09:38:50.32 |
+09:56:13.4 |
HIP 47325 |
18.99 |
| 2026-07-31 00:00 |
09:39:32.78 |
+09:50:34.3 |
HIP 47325 |
19.13 |
| 2026-07-31 12:00 |
09:40:15.28 |
+09:44:54.3 |
HIP 47435 |
14.90 |
| 2026-08-01 00:00 |
09:40:57.80 |
+09:39:13.5 |
HIP 47508 |
14.59 |
| 2026-08-01 12:00 |
09:41:40.35 |
+09:33:31.9 |
HIP 47462 |
18.75 |
| 2026-08-02 00:00 |
09:42:22.93 |
+09:27:49.4 |
HIP 47710 |
19.67 |
| 2026-08-02 12:00 |
09:43:05.54 |
+09:22:06.0 |
HIP 47710 |
14.74 |
| 2026-08-03 00:00 |
09:43:48.18 |
+09:16:21.8 |
HIP 47710 |
18.28 |
| 2026-08-03 12:00 |
09:44:30.85 |
+09:10:36.8 |
HIP 47862 |
20.98 |
| 2026-08-04 00:00 |
09:45:13.55 |
+09:04:50.9 |
HIP 47862 |
11.91 |
| 2026-08-04 12:00 |
09:45:56.27 |
+08:59:04.2 |
HIP 47862 |
11.50 |
| 2026-08-05 00:00 |
09:46:39.03 |
+08:53:16.6 |
HIP 47862 |
20.31 |
| 2026-08-05 12:00 |
09:47:21.81 |
+08:47:28.2 |
HIP 48014 |
13.30 |
| 2026-08-06 00:00 |
09:48:04.61 |
+08:41:38.9 |
HIP 48014 |
14.00 |
| 2026-08-06 12:00 |
09:48:47.45 |
+08:35:48.7 |
HIP 48145 |
17.75 |
| 2026-08-07 00:00 |
09:49:30.31 |
+08:29:57.7 |
HIP 48145 |
15.06 |
| 2026-08-07 12:00 |
09:50:13.20 |
+08:24:05.8 |
HIP 48309 |
19.45 |
| 2026-08-08 00:00 |
09:50:56.12 |
+08:18:13.1 |
HIP 48309 |
10.58 |
| 2026-08-08 12:00 |
09:51:39.06 |
+08:12:19.5 |
HIP 48412 |
9.84 |
| 2026-08-09 00:00 |
09:52:22.03 |
+08:06:25.1 |
HIP 48412 |
2.55 |
| 2026-08-09 12:00 |
09:53:05.02 |
+08:00:29.8 |
HIP 48412 |
14.58 |
| 2026-08-10 00:00 |
09:53:48.04 |
+07:54:33.6 |
HIP 48553 |
10.93 |
| 2026-08-10 12:00 |
09:54:31.08 |
+07:48:36.6 |
HIP 48553 |
16.98 |
| 2026-08-11 00:00 |
09:55:14.15 |
+07:42:38.7 |
HIP 48668 |
5.03 |
| 2026-08-11 12:00 |
09:55:57.24 |
+07:36:40.0 |
HIP 48699 |
4.01 |
| 2026-08-12 00:00 |
09:56:40.36 |
+07:30:40.4 |
HIP 48699 |
15.02 |
| 2026-08-12 12:00 |
09:57:23.50 |
+07:24:40.0 |
HIP 48699 |
27.13 |
| 2026-08-13 00:00 |
09:58:06.66 |
+07:18:38.7 |
HIP 48699 |
39.35 |
| 2026-08-13 12:00 |
09:58:49.85 |
+07:12:36.6 |
HIP 49100 |
36.41 |
| 2026-08-14 00:00 |
09:59:33.05 |
+07:06:33.6 |
HIP 49100 |
26.41 |
| 2026-08-14 12:00 |
10:00:16.28 |
+07:00:29.8 |
HIP 49100 |
19.29 |
| 2026-08-15 00:00 |
10:00:59.53 |
+06:54:25.1 |
HIP 49100 |
18.72 |
| 2026-08-15 12:00 |
10:01:42.80 |
+06:48:19.6 |
HIP 49100 |
25.18 |
| 2026-08-16 00:00 |
10:02:26.09 |
+06:42:13.2 |
HIP 49100 |
34.97 |
| 2026-08-16 12:00 |
10:03:09.41 |
+06:36:06.0 |
HIP 49316 |
36.67 |
| 2026-08-17 00:00 |
10:03:52.74 |
+06:29:57.9 |
HIP 49342 |
30.27 |
| 2026-08-17 12:00 |
10:04:36.09 |
+06:23:49.0 |
HIP 49342 |
23.36 |
| 2026-08-18 00:00 |
10:05:19.46 |
+06:17:39.3 |
HIP 49342 |
21.97 |
| 2026-08-18 12:00 |
10:06:02.85 |
+06:11:28.8 |
HIP 49601 |
22.74 |
| 2026-08-19 00:00 |
10:06:46.26 |
+06:05:17.3 |
HIP 49601 |
10.73 |