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 |
1.000 |
| 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) |
| 2026-03-26 00:00 |
05:33:31.78 |
+11:05:59.4 |
HIP 26028 |
8.01 |
| 2026-03-26 12:00 |
05:33:33.19 |
+11:06:10.9 |
HIP 26028 |
8.10 |
| 2026-03-27 00:00 |
05:33:34.64 |
+11:06:22.3 |
HIP 26028 |
8.20 |
| 2026-03-27 12:00 |
05:33:36.12 |
+11:06:33.8 |
HIP 26028 |
8.34 |
| 2026-03-28 00:00 |
05:33:37.64 |
+11:06:45.2 |
HIP 26028 |
8.50 |
| 2026-03-28 12:00 |
05:33:39.20 |
+11:06:56.7 |
HIP 26028 |
8.68 |
| 2026-03-29 00:00 |
05:33:40.80 |
+11:07:08.1 |
HIP 26028 |
8.89 |
| 2026-03-29 12:00 |
05:33:42.44 |
+11:07:19.5 |
HIP 26028 |
9.12 |
| 2026-03-30 00:00 |
05:33:44.11 |
+11:07:30.9 |
HIP 26028 |
9.38 |
| 2026-03-30 12:00 |
05:33:45.82 |
+11:07:42.2 |
HIP 26028 |
9.66 |
| 2026-03-31 00:00 |
05:33:47.56 |
+11:07:53.6 |
HIP 26028 |
9.96 |
| 2026-03-31 12:00 |
05:33:49.35 |
+11:08:04.9 |
HIP 26028 |
10.28 |
| 2026-04-01 00:00 |
05:33:51.16 |
+11:08:16.3 |
HIP 26028 |
10.62 |
| 2026-04-01 12:00 |
05:33:53.02 |
+11:08:27.5 |
HIP 26028 |
10.98 |
| 2026-04-02 00:00 |
05:33:54.91 |
+11:08:38.8 |
HIP 26028 |
11.36 |
| 2026-04-02 12:00 |
05:33:56.84 |
+11:08:50.1 |
HIP 26028 |
11.76 |
| 2026-04-03 00:00 |
05:33:58.80 |
+11:09:01.3 |
HIP 26028 |
12.17 |
| 2026-04-03 12:00 |
05:34:00.80 |
+11:09:12.5 |
HIP 26028 |
12.60 |
| 2026-04-04 00:00 |
05:34:02.83 |
+11:09:23.7 |
HIP 26028 |
13.04 |
| 2026-04-04 12:00 |
05:34:04.90 |
+11:09:34.8 |
HIP 26028 |
13.50 |
| 2026-04-05 00:00 |
05:34:07.01 |
+11:09:46.0 |
HIP 26028 |
13.98 |
| 2026-04-05 12:00 |
05:34:09.15 |
+11:09:57.1 |
HIP 26028 |
14.47 |
| 2026-04-06 00:00 |
05:34:11.33 |
+11:10:08.1 |
HIP 26028 |
14.97 |
| 2026-04-06 12:00 |
05:34:13.54 |
+11:10:19.2 |
HIP 26028 |
15.48 |
| 2026-04-07 00:00 |
05:34:15.78 |
+11:10:30.2 |
HIP 26028 |
16.01 |
| 2026-04-07 12:00 |
05:34:18.06 |
+11:10:41.1 |
HIP 26028 |
16.55 |
| 2026-04-08 00:00 |
05:34:20.38 |
+11:10:52.1 |
HIP 26028 |
17.10 |
| 2026-04-08 12:00 |
05:34:22.72 |
+11:11:03.0 |
HIP 26028 |
17.66 |
| 2026-04-09 00:00 |
05:34:25.11 |
+11:11:13.9 |
HIP 26028 |
18.24 |
| 2026-04-09 12:00 |
05:34:27.52 |
+11:11:24.7 |
HIP 26028 |
18.82 |
| 2026-04-10 00:00 |
05:34:29.97 |
+11:11:35.5 |
HIP 26028 |
19.41 |
| 2026-04-10 12:00 |
05:34:32.46 |
+11:11:46.2 |
HIP 26028 |
20.02 |
| 2026-04-11 00:00 |
05:34:34.97 |
+11:11:57.0 |
HIP 26028 |
20.63 |
| 2026-04-11 12:00 |
05:34:37.53 |
+11:12:07.6 |
HIP 26028 |
21.26 |
| 2026-04-12 00:00 |
05:34:40.11 |
+11:12:18.3 |
HIP 26028 |
21.89 |
| 2026-04-12 12:00 |
05:34:42.73 |
+11:12:28.9 |
HIP 26028 |
22.54 |
| 2026-04-13 00:00 |
05:34:45.38 |
+11:12:39.4 |
HIP 26028 |
23.19 |
| 2026-04-13 12:00 |
05:34:48.06 |
+11:12:49.9 |
HIP 26028 |
23.85 |
| 2026-04-14 00:00 |
05:34:50.77 |
+11:13:00.4 |
HIP 26028 |
24.52 |
| 2026-04-14 12:00 |
05:34:53.52 |
+11:13:10.8 |
HIP 26335 |
24.77 |
| 2026-04-15 00:00 |
05:34:56.30 |
+11:13:21.2 |
HIP 26335 |
24.06 |
| 2026-04-15 12:00 |
05:34:59.11 |
+11:13:31.5 |
HIP 26335 |
23.35 |
| 2026-04-16 00:00 |
05:35:01.95 |
+11:13:41.8 |
HIP 26335 |
22.64 |