메타데이터
| 항목 |
값 |
| Designation |
C/2014 A5 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-08-13T12:40:53.086080Z |
| Orbit solution date (soln_date, UTC) |
2022-06-07T21:44:06Z |
| Obs used |
42 |
| NEO |
- |
| M1 |
5.500 |
| K1 |
17.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-08-21.0000000 |
| e |
0.96039227 |
| q (au) |
4.800361 |
| a (au) |
121.197575 |
| i (deg) |
31.993327 |
| Ω (om, deg) |
310.103183 |
| ω (w, deg) |
182.581087 |
| M (ma, deg) |
0.005519 |
밝기
산란 + 전체 선형
$$
M_a = (9.124 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.124 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.615 |
| 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) |
| 2026-05-12 00:00 |
17:55:32.32 |
-47:03:51.6 |
HIP 87770 |
16.61 |
| 2026-05-12 12:00 |
17:55:27.37 |
-47:04:06.0 |
HIP 87770 |
17.00 |
| 2026-05-13 00:00 |
17:55:22.38 |
-47:04:20.2 |
HIP 87770 |
17.41 |
| 2026-05-13 12:00 |
17:55:17.34 |
-47:04:34.1 |
HIP 87770 |
17.86 |
| 2026-05-14 00:00 |
17:55:12.27 |
-47:04:47.9 |
HIP 87770 |
18.34 |
| 2026-05-14 12:00 |
17:55:07.16 |
-47:05:01.4 |
HIP 87770 |
18.85 |
| 2026-05-15 00:00 |
17:55:02.01 |
-47:05:14.6 |
HIP 87562 |
19.35 |
| 2026-05-15 12:00 |
17:54:56.82 |
-47:05:27.7 |
HIP 87562 |
18.45 |
| 2026-05-16 00:00 |
17:54:51.59 |
-47:05:40.5 |
HIP 87562 |
17.56 |
| 2026-05-16 12:00 |
17:54:46.33 |
-47:05:53.1 |
HIP 87562 |
16.66 |
| 2026-05-17 00:00 |
17:54:41.03 |
-47:06:05.5 |
HIP 87562 |
15.76 |
| 2026-05-17 12:00 |
17:54:35.69 |
-47:06:17.6 |
HIP 87562 |
14.85 |
| 2026-05-18 00:00 |
17:54:30.32 |
-47:06:29.5 |
HIP 87562 |
13.95 |
| 2026-05-18 12:00 |
17:54:24.91 |
-47:06:41.2 |
HIP 87562 |
13.05 |
| 2026-05-19 00:00 |
17:54:19.47 |
-47:06:52.6 |
HIP 87562 |
12.15 |
| 2026-05-19 12:00 |
17:54:13.99 |
-47:07:03.8 |
HIP 87562 |
11.26 |
| 2026-05-20 00:00 |
17:54:08.48 |
-47:07:14.7 |
HIP 87562 |
10.37 |
| 2026-05-20 12:00 |
17:54:02.94 |
-47:07:25.4 |
HIP 87562 |
9.50 |
| 2026-05-21 00:00 |
17:53:57.36 |
-47:07:35.9 |
HIP 87562 |
8.64 |
| 2026-05-21 12:00 |
17:53:51.75 |
-47:07:46.1 |
HIP 87562 |
7.81 |
| 2026-05-22 00:00 |
17:53:46.12 |
-47:07:56.0 |
HIP 87562 |
7.00 |
| 2026-05-22 12:00 |
17:53:40.45 |
-47:08:05.8 |
HIP 87562 |
6.25 |
| 2026-05-23 00:00 |
17:53:34.75 |
-47:08:15.2 |
HIP 87562 |
5.57 |
| 2026-05-23 12:00 |
17:53:29.02 |
-47:08:24.4 |
HIP 87562 |
4.99 |
| 2026-05-24 00:00 |
17:53:23.26 |
-47:08:33.4 |
HIP 87562 |
4.56 |
| 2026-05-24 12:00 |
17:53:17.48 |
-47:08:42.1 |
HIP 87562 |
4.32 |
| 2026-05-25 00:00 |
17:53:11.66 |
-47:08:50.6 |
HIP 87562 |
4.31 |
| 2026-05-25 12:00 |
17:53:05.82 |
-47:08:58.8 |
HIP 87562 |
4.53 |
| 2026-05-26 00:00 |
17:52:59.95 |
-47:09:06.7 |
HIP 87562 |
4.95 |
| 2026-05-26 12:00 |
17:52:54.06 |
-47:09:14.4 |
HIP 87562 |
5.53 |
| 2026-05-27 00:00 |
17:52:48.14 |
-47:09:21.9 |
HIP 87562 |
6.23 |
| 2026-05-27 12:00 |
17:52:42.19 |
-47:09:29.1 |
HIP 87562 |
7.01 |
| 2026-05-28 00:00 |
17:52:36.22 |
-47:09:36.0 |
HIP 87562 |
7.85 |
| 2026-05-28 12:00 |
17:52:30.23 |
-47:09:42.6 |
HIP 87562 |
8.73 |
| 2026-05-29 00:00 |
17:52:24.21 |
-47:09:49.0 |
HIP 87562 |
9.65 |
| 2026-05-29 12:00 |
17:52:18.17 |
-47:09:55.2 |
HIP 87562 |
10.59 |
| 2026-05-30 00:00 |
17:52:12.11 |
-47:10:01.1 |
HIP 87562 |
11.56 |
| 2026-05-30 12:00 |
17:52:06.02 |
-47:10:06.7 |
HIP 87562 |
12.54 |
| 2026-05-31 00:00 |
17:51:59.92 |
-47:10:12.0 |
HIP 87562 |
13.53 |
| 2026-05-31 12:00 |
17:51:53.79 |
-47:10:17.1 |
HIP 87562 |
14.53 |
| 2026-06-01 00:00 |
17:51:47.64 |
-47:10:21.9 |
HIP 87302 |
15.47 |
| 2026-06-01 12:00 |
17:51:41.47 |
-47:10:26.5 |
HIP 87302 |
14.44 |
| 2026-06-02 00:00 |
17:51:35.29 |
-47:10:30.7 |
HIP 87302 |
13.40 |