메타데이터
| 항목 |
값 |
| Designation |
C/2016 A5 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2015-06-28T07:50:25.661760Z |
| Orbit solution date (soln_date, UTC) |
2022-07-06T03:12:22Z |
| Obs used |
46 |
| NEO |
- |
| M1 |
13.100 |
| K1 |
11.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-12-22.0000000 |
| e |
0.99730397 |
| q (au) |
2.947450 |
| a (au) |
1093.256056 |
| i (deg) |
40.327049 |
| Ω (om, deg) |
136.218315 |
| ω (w, deg) |
321.625267 |
| M (ma, deg) |
0.004817 |
밝기
산란 + 전체 선형
$$
M_a = (12.549 + 4.558\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.549 |
| n |
4.558 |
| gf |
0.973 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
1.000 |
| 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 |
16:35:43.18 |
+18:33:42.2 |
HIP 81232 |
23.99 |
| 2026-03-26 12:00 |
16:35:41.54 |
+18:34:26.2 |
HIP 81232 |
23.20 |
| 2026-03-27 00:00 |
16:35:39.85 |
+18:35:10.2 |
HIP 81232 |
22.42 |
| 2026-03-27 12:00 |
16:35:38.13 |
+18:35:54.1 |
HIP 81232 |
21.64 |
| 2026-03-28 00:00 |
16:35:36.37 |
+18:36:37.8 |
HIP 81232 |
20.87 |
| 2026-03-28 12:00 |
16:35:34.56 |
+18:37:21.5 |
HIP 81232 |
20.10 |
| 2026-03-29 00:00 |
16:35:32.72 |
+18:38:05.0 |
HIP 81232 |
19.34 |
| 2026-03-29 12:00 |
16:35:30.84 |
+18:38:48.4 |
HIP 81232 |
18.59 |
| 2026-03-30 00:00 |
16:35:28.92 |
+18:39:31.7 |
HIP 81232 |
17.85 |
| 2026-03-30 12:00 |
16:35:26.96 |
+18:40:14.8 |
HIP 81232 |
17.12 |
| 2026-03-31 00:00 |
16:35:24.96 |
+18:40:57.8 |
HIP 81232 |
16.41 |
| 2026-03-31 12:00 |
16:35:22.92 |
+18:41:40.7 |
HIP 81232 |
15.71 |
| 2026-04-01 00:00 |
16:35:20.84 |
+18:42:23.5 |
HIP 81232 |
15.03 |
| 2026-04-01 12:00 |
16:35:18.72 |
+18:43:06.1 |
HIP 81232 |
14.38 |
| 2026-04-02 00:00 |
16:35:16.57 |
+18:43:48.6 |
HIP 81232 |
13.76 |
| 2026-04-02 12:00 |
16:35:14.37 |
+18:44:30.9 |
HIP 81232 |
13.17 |
| 2026-04-03 00:00 |
16:35:12.14 |
+18:45:13.1 |
HIP 81232 |
12.62 |
| 2026-04-03 12:00 |
16:35:09.88 |
+18:45:55.1 |
HIP 81232 |
12.11 |
| 2026-04-04 00:00 |
16:35:07.57 |
+18:46:36.9 |
HIP 81232 |
11.65 |
| 2026-04-04 12:00 |
16:35:05.23 |
+18:47:18.6 |
HIP 81232 |
11.25 |
| 2026-04-05 00:00 |
16:35:02.84 |
+18:48:00.2 |
HIP 81232 |
10.91 |
| 2026-04-05 12:00 |
16:35:00.43 |
+18:48:41.5 |
HIP 81232 |
10.64 |
| 2026-04-06 00:00 |
16:34:57.97 |
+18:49:22.7 |
HIP 81232 |
10.46 |
| 2026-04-06 12:00 |
16:34:55.48 |
+18:50:03.8 |
HIP 81232 |
10.35 |
| 2026-04-07 00:00 |
16:34:52.95 |
+18:50:44.6 |
HIP 81232 |
10.34 |
| 2026-04-07 12:00 |
16:34:50.39 |
+18:51:25.3 |
HIP 81232 |
10.41 |
| 2026-04-08 00:00 |
16:34:47.79 |
+18:52:05.8 |
HIP 81232 |
10.57 |
| 2026-04-08 12:00 |
16:34:45.15 |
+18:52:46.0 |
HIP 81232 |
10.81 |
| 2026-04-09 00:00 |
16:34:42.48 |
+18:53:26.1 |
HIP 81232 |
11.13 |
| 2026-04-09 12:00 |
16:34:39.78 |
+18:54:06.1 |
HIP 81232 |
11.53 |
| 2026-04-10 00:00 |
16:34:37.03 |
+18:54:45.8 |
HIP 81110 |
11.03 |
| 2026-04-10 12:00 |
16:34:34.26 |
+18:55:25.3 |
HIP 81110 |
10.13 |
| 2026-04-11 00:00 |
16:34:31.45 |
+18:56:04.6 |
HIP 81110 |
9.22 |
| 2026-04-11 12:00 |
16:34:28.60 |
+18:56:43.7 |
HIP 81110 |
8.32 |
| 2026-04-12 00:00 |
16:34:25.72 |
+18:57:22.5 |
HIP 81110 |
7.43 |
| 2026-04-12 12:00 |
16:34:22.81 |
+18:58:01.2 |
HIP 81110 |
6.54 |
| 2026-04-13 00:00 |
16:34:19.86 |
+18:58:39.6 |
HIP 81110 |
5.66 |
| 2026-04-13 12:00 |
16:34:16.88 |
+18:59:17.8 |
HIP 81110 |
4.80 |
| 2026-04-14 00:00 |
16:34:13.86 |
+18:59:55.8 |
HIP 81110 |
3.97 |
| 2026-04-14 12:00 |
16:34:10.82 |
+19:00:33.6 |
HIP 81110 |
3.20 |
| 2026-04-15 00:00 |
16:34:07.74 |
+19:01:11.1 |
HIP 81110 |
2.56 |
| 2026-04-15 12:00 |
16:34:04.63 |
+19:01:48.4 |
HIP 81110 |
2.16 |
| 2026-04-16 00:00 |
16:34:01.48 |
+19:02:25.5 |
HIP 81110 |
2.14 |