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) |
| 2026-03-26 00:00 |
17:59:28.39 |
-46:30:04.4 |
HIP 88021 |
14.30 |
| 2026-03-26 12:00 |
17:59:28.60 |
-46:30:29.8 |
HIP 88021 |
14.67 |
| 2026-03-27 00:00 |
17:59:28.75 |
-46:30:55.1 |
HIP 88021 |
15.04 |
| 2026-03-27 12:00 |
17:59:28.84 |
-46:31:20.5 |
HIP 88021 |
15.41 |
| 2026-03-28 00:00 |
17:59:28.86 |
-46:31:45.8 |
HIP 88021 |
15.78 |
| 2026-03-28 12:00 |
17:59:28.83 |
-46:32:11.1 |
HIP 88021 |
16.14 |
| 2026-03-29 00:00 |
17:59:28.73 |
-46:32:36.4 |
HIP 88021 |
16.50 |
| 2026-03-29 12:00 |
17:59:28.57 |
-46:33:01.7 |
HIP 88021 |
16.86 |
| 2026-03-30 00:00 |
17:59:28.35 |
-46:33:26.9 |
HIP 88021 |
17.22 |
| 2026-03-30 12:00 |
17:59:28.07 |
-46:33:52.1 |
HIP 88021 |
17.57 |
| 2026-03-31 00:00 |
17:59:27.72 |
-46:34:17.3 |
HIP 88021 |
17.92 |
| 2026-03-31 12:00 |
17:59:27.32 |
-46:34:42.5 |
HIP 88021 |
18.27 |
| 2026-04-01 00:00 |
17:59:26.85 |
-46:35:07.6 |
HIP 88021 |
18.62 |
| 2026-04-01 12:00 |
17:59:26.32 |
-46:35:32.6 |
HIP 88021 |
18.96 |
| 2026-04-02 00:00 |
17:59:25.73 |
-46:35:57.7 |
HIP 88021 |
19.31 |
| 2026-04-02 12:00 |
17:59:25.08 |
-46:36:22.7 |
HIP 88021 |
19.65 |
| 2026-04-03 00:00 |
17:59:24.36 |
-46:36:47.6 |
HIP 88021 |
20.00 |
| 2026-04-03 12:00 |
17:59:23.59 |
-46:37:12.5 |
HIP 88021 |
20.34 |
| 2026-04-04 00:00 |
17:59:22.75 |
-46:37:37.4 |
HIP 88021 |
20.68 |
| 2026-04-04 12:00 |
17:59:21.85 |
-46:38:02.2 |
HIP 88021 |
21.02 |
| 2026-04-05 00:00 |
17:59:20.89 |
-46:38:26.9 |
HIP 88021 |
21.36 |
| 2026-04-05 12:00 |
17:59:19.87 |
-46:38:51.6 |
HIP 88021 |
21.70 |
| 2026-04-06 00:00 |
17:59:18.79 |
-46:39:16.3 |
HIP 88021 |
22.04 |
| 2026-04-06 12:00 |
17:59:17.65 |
-46:39:40.8 |
HIP 88021 |
22.38 |
| 2026-04-07 00:00 |
17:59:16.45 |
-46:40:05.4 |
HIP 88021 |
22.72 |
| 2026-04-07 12:00 |
17:59:15.19 |
-46:40:29.8 |
HIP 88021 |
23.06 |
| 2026-04-08 00:00 |
17:59:13.86 |
-46:40:54.2 |
HIP 88021 |
23.41 |
| 2026-04-08 12:00 |
17:59:12.48 |
-46:41:18.5 |
HIP 88021 |
23.75 |
| 2026-04-09 00:00 |
17:59:11.03 |
-46:41:42.8 |
HIP 88021 |
24.09 |
| 2026-04-09 12:00 |
17:59:09.53 |
-46:42:06.9 |
HIP 88021 |
24.44 |
| 2026-04-10 00:00 |
17:59:07.96 |
-46:42:31.1 |
HIP 88021 |
24.78 |
| 2026-04-10 12:00 |
17:59:06.33 |
-46:42:55.1 |
HIP 88021 |
25.13 |
| 2026-04-11 00:00 |
17:59:04.65 |
-46:43:19.0 |
HIP 88021 |
25.48 |
| 2026-04-11 12:00 |
17:59:02.90 |
-46:43:42.9 |
HIP 88021 |
25.83 |
| 2026-04-12 00:00 |
17:59:01.09 |
-46:44:06.7 |
HIP 88021 |
26.19 |
| 2026-04-12 12:00 |
17:58:59.23 |
-46:44:30.4 |
HIP 88021 |
26.54 |
| 2026-04-13 00:00 |
17:58:57.30 |
-46:44:54.0 |
HIP 88021 |
26.90 |
| 2026-04-13 12:00 |
17:58:55.32 |
-46:45:17.5 |
HIP 88021 |
27.26 |
| 2026-04-14 00:00 |
17:58:53.27 |
-46:45:40.9 |
HIP 87805 |
27.63 |
| 2026-04-14 12:00 |
17:58:51.17 |
-46:46:04.2 |
HIP 87805 |
27.32 |
| 2026-04-15 00:00 |
17:58:49.01 |
-46:46:27.4 |
HIP 87805 |
27.01 |
| 2026-04-15 12:00 |
17:58:46.78 |
-46:46:50.6 |
HIP 87805 |
26.70 |
| 2026-04-16 00:00 |
17:58:44.50 |
-46:47:13.6 |
HIP 87805 |
26.39 |