메타데이터
| 항목 |
값 |
| Designation |
C/2015 J1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-06-29T23:13:39.259200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:10Z |
| Obs used |
54 |
| NEO |
- |
| M1 |
7.500 |
| K1 |
11.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-08-08.0000000 |
| e |
1.00318272 |
| q (au) |
6.019565 |
| a (au) |
-1891.328665 |
| i (deg) |
94.998299 |
| Ω (om, deg) |
219.992187 |
| ω (w, deg) |
315.467882 |
| M (ma, deg) |
0.004841 |
밝기
산란 + 전체 선형
$$
M_a = (5.428 + 5.041\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.428 |
| n |
5.041 |
| gf |
1.000 |
| gb |
-0.500 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
15:57:21.54 |
+60:02:30.7 |
HIP 78254 |
19.88 |
| 2026-07-29 12:00 |
15:57:18.23 |
+60:01:38.3 |
HIP 78254 |
19.33 |
| 2026-07-30 00:00 |
15:57:14.98 |
+60:00:45.7 |
HIP 78254 |
18.81 |
| 2026-07-30 12:00 |
15:57:11.81 |
+59:59:52.8 |
HIP 78254 |
18.31 |
| 2026-07-31 00:00 |
15:57:08.72 |
+59:58:59.6 |
HIP 78254 |
17.84 |
| 2026-07-31 12:00 |
15:57:05.70 |
+59:58:06.2 |
HIP 78254 |
17.40 |
| 2026-08-01 00:00 |
15:57:02.75 |
+59:57:12.6 |
HIP 78254 |
17.00 |
| 2026-08-01 12:00 |
15:56:59.88 |
+59:56:18.7 |
HIP 78254 |
16.64 |
| 2026-08-02 00:00 |
15:56:57.08 |
+59:55:24.6 |
HIP 78254 |
16.32 |
| 2026-08-02 12:00 |
15:56:54.35 |
+59:54:30.3 |
HIP 78254 |
16.04 |
| 2026-08-03 00:00 |
15:56:51.70 |
+59:53:35.8 |
HIP 78254 |
15.80 |
| 2026-08-03 12:00 |
15:56:49.13 |
+59:52:41.1 |
HIP 78254 |
15.61 |
| 2026-08-04 00:00 |
15:56:46.62 |
+59:51:46.1 |
HIP 78254 |
15.47 |
| 2026-08-04 12:00 |
15:56:44.20 |
+59:50:50.9 |
HIP 78254 |
15.38 |
| 2026-08-05 00:00 |
15:56:41.85 |
+59:49:55.6 |
HIP 78254 |
15.34 |
| 2026-08-05 12:00 |
15:56:39.57 |
+59:49:00.0 |
HIP 78254 |
15.35 |
| 2026-08-06 00:00 |
15:56:37.37 |
+59:48:04.3 |
HIP 78254 |
15.42 |
| 2026-08-06 12:00 |
15:56:35.24 |
+59:47:08.3 |
HIP 78254 |
15.53 |
| 2026-08-07 00:00 |
15:56:33.19 |
+59:46:12.2 |
HIP 78254 |
15.70 |
| 2026-08-07 12:00 |
15:56:31.22 |
+59:45:15.9 |
HIP 78254 |
15.91 |
| 2026-08-08 00:00 |
15:56:29.32 |
+59:44:19.4 |
HIP 78254 |
16.17 |
| 2026-08-08 12:00 |
15:56:27.50 |
+59:43:22.8 |
HIP 78254 |
16.47 |
| 2026-08-09 00:00 |
15:56:25.75 |
+59:42:26.0 |
HIP 78254 |
16.81 |
| 2026-08-09 12:00 |
15:56:24.08 |
+59:41:29.0 |
HIP 78254 |
17.20 |
| 2026-08-10 00:00 |
15:56:22.49 |
+59:40:31.9 |
HIP 78254 |
17.62 |
| 2026-08-10 12:00 |
15:56:20.97 |
+59:39:34.6 |
HIP 78254 |
18.07 |
| 2026-08-11 00:00 |
15:56:19.53 |
+59:38:37.2 |
HIP 78254 |
18.56 |
| 2026-08-11 12:00 |
15:56:18.16 |
+59:37:39.6 |
HIP 78254 |
19.08 |
| 2026-08-12 00:00 |
15:56:16.87 |
+59:36:42.0 |
HIP 78254 |
19.62 |
| 2026-08-12 12:00 |
15:56:15.66 |
+59:35:44.1 |
HIP 78254 |
20.19 |
| 2026-08-13 00:00 |
15:56:14.52 |
+59:34:46.2 |
HIP 78254 |
20.78 |
| 2026-08-13 12:00 |
15:56:13.46 |
+59:33:48.1 |
HIP 78254 |
21.40 |
| 2026-08-14 00:00 |
15:56:12.48 |
+59:32:50.0 |
HIP 78184 |
20.72 |
| 2026-08-14 12:00 |
15:56:11.57 |
+59:31:51.7 |
HIP 78184 |
20.03 |
| 2026-08-15 00:00 |
15:56:10.74 |
+59:30:53.3 |
HIP 78184 |
19.35 |
| 2026-08-15 12:00 |
15:56:09.99 |
+59:29:54.9 |
HIP 78184 |
18.69 |
| 2026-08-16 00:00 |
15:56:09.31 |
+59:28:56.3 |
HIP 78184 |
18.05 |
| 2026-08-16 12:00 |
15:56:08.71 |
+59:27:57.6 |
HIP 78184 |
17.43 |
| 2026-08-17 00:00 |
15:56:08.18 |
+59:26:58.9 |
HIP 78184 |
16.84 |
| 2026-08-17 12:00 |
15:56:07.73 |
+59:26:00.1 |
HIP 78184 |
16.28 |
| 2026-08-18 00:00 |
15:56:07.36 |
+59:25:01.2 |
HIP 78184 |
15.76 |
| 2026-08-18 12:00 |
15:56:07.06 |
+59:24:02.3 |
HIP 78184 |
15.27 |
| 2026-08-19 00:00 |
15:56:06.84 |
+59:23:03.3 |
HIP 78184 |
14.82 |