메타데이터
| 항목 |
값 |
| Designation |
C/2013 G8 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-11-14T23:30:02.741760Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:34Z |
| Obs used |
147 |
| NEO |
- |
| M1 |
7.700 |
| K1 |
11.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-09-14.0000000 |
| e |
0.99844886 |
| q (au) |
5.141176 |
| a (au) |
3314.451067 |
| i (deg) |
27.615046 |
| Ω (om, deg) |
241.021944 |
| ω (w, deg) |
80.168493 |
| M (ma, deg) |
359.999680 |
밝기
산란 + 전체 선형
$$
M_a = (12.524 + 2.882\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.524 |
| n |
2.882 |
| gf |
0.988 |
| gb |
-0.652 |
| k |
0.800 |
| 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 |
05:41:07.36 |
+11:24:05.7 |
HIP 26669 |
20.50 |
| 2026-06-01 12:00 |
05:41:12.09 |
+11:24:08.0 |
HIP 26669 |
21.41 |
| 2026-06-02 00:00 |
05:41:16.83 |
+11:24:10.3 |
HIP 26669 |
22.35 |
| 2026-06-02 12:00 |
05:41:21.59 |
+11:24:12.4 |
HIP 26669 |
23.30 |
| 2026-06-03 00:00 |
05:41:26.34 |
+11:24:14.4 |
HIP 26669 |
24.27 |
| 2026-06-03 12:00 |
05:41:31.11 |
+11:24:16.3 |
HIP 26669 |
25.26 |
| 2026-06-04 00:00 |
05:41:35.88 |
+11:24:18.1 |
HIP 26669 |
26.27 |
| 2026-06-04 12:00 |
05:41:40.66 |
+11:24:19.8 |
HIP 26669 |
27.29 |
| 2026-06-05 00:00 |
05:41:45.45 |
+11:24:21.4 |
HIP 26669 |
28.32 |
| 2026-06-05 12:00 |
05:41:50.24 |
+11:24:22.9 |
HIP 26669 |
29.36 |
| 2026-06-06 00:00 |
05:41:55.04 |
+11:24:24.2 |
HIP 27020 |
28.44 |
| 2026-06-06 12:00 |
05:41:59.85 |
+11:24:25.5 |
HIP 27020 |
27.26 |
| 2026-06-07 00:00 |
05:42:04.66 |
+11:24:26.6 |
HIP 27020 |
26.08 |
| 2026-06-07 12:00 |
05:42:09.47 |
+11:24:27.6 |
HIP 27020 |
24.90 |
| 2026-06-08 00:00 |
05:42:14.30 |
+11:24:28.5 |
HIP 27020 |
23.72 |
| 2026-06-08 12:00 |
05:42:19.12 |
+11:24:29.3 |
HIP 27020 |
22.54 |
| 2026-06-09 00:00 |
05:42:23.95 |
+11:24:30.0 |
HIP 27020 |
21.35 |
| 2026-06-09 12:00 |
05:42:28.79 |
+11:24:30.6 |
HIP 27020 |
20.17 |
| 2026-06-10 00:00 |
05:42:33.63 |
+11:24:31.0 |
HIP 27020 |
18.98 |
| 2026-06-10 12:00 |
05:42:38.47 |
+11:24:31.3 |
HIP 27020 |
17.80 |
| 2026-06-11 00:00 |
05:42:43.31 |
+11:24:31.5 |
HIP 27020 |
16.61 |
| 2026-06-11 12:00 |
05:42:48.16 |
+11:24:31.6 |
HIP 27020 |
15.42 |
| 2026-06-12 00:00 |
05:42:53.02 |
+11:24:31.6 |
HIP 27020 |
14.23 |
| 2026-06-12 12:00 |
05:42:57.87 |
+11:24:31.5 |
HIP 27020 |
13.04 |
| 2026-06-13 00:00 |
05:43:02.73 |
+11:24:31.2 |
HIP 27020 |
11.85 |
| 2026-06-13 12:00 |
05:43:07.59 |
+11:24:30.9 |
HIP 27020 |
10.66 |
| 2026-06-14 00:00 |
05:43:12.45 |
+11:24:30.4 |
HIP 27020 |
9.47 |
| 2026-06-14 12:00 |
05:43:17.31 |
+11:24:29.8 |
HIP 27020 |
8.28 |
| 2026-06-15 00:00 |
05:43:22.17 |
+11:24:29.1 |
HIP 27020 |
7.09 |
| 2026-06-15 12:00 |
05:43:27.04 |
+11:24:28.2 |
HIP 27020 |
5.89 |
| 2026-06-16 00:00 |
05:43:31.90 |
+11:24:27.3 |
HIP 27020 |
4.70 |
| 2026-06-16 12:00 |
05:43:36.77 |
+11:24:26.2 |
HIP 27020 |
3.51 |
| 2026-06-17 00:00 |
05:43:41.63 |
+11:24:25.0 |
HIP 27020 |
2.32 |
| 2026-06-17 12:00 |
05:43:46.50 |
+11:24:23.7 |
HIP 27020 |
1.13 |
| 2026-06-18 00:00 |
05:43:51.36 |
+11:24:22.3 |
HIP 27020 |
0.07 |
| 2026-06-18 12:00 |
05:43:56.22 |
+11:24:20.7 |
HIP 27020 |
1.26 |
| 2026-06-19 00:00 |
05:44:01.08 |
+11:24:19.1 |
HIP 27020 |
2.45 |
| 2026-06-19 12:00 |
05:44:05.94 |
+11:24:17.3 |
HIP 27020 |
3.64 |
| 2026-06-20 00:00 |
05:44:10.80 |
+11:24:15.4 |
HIP 27020 |
4.83 |
| 2026-06-20 12:00 |
05:44:15.66 |
+11:24:13.3 |
HIP 27020 |
6.02 |
| 2026-06-21 00:00 |
05:44:20.51 |
+11:24:11.2 |
HIP 27020 |
7.21 |
| 2026-06-21 12:00 |
05:44:25.36 |
+11:24:09.0 |
HIP 27020 |
8.40 |
| 2026-06-22 00:00 |
05:44:30.21 |
+11:24:06.6 |
HIP 27020 |
9.59 |