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 |
0.971 |
| 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) |
| 2026-06-01 00:00 |
16:27:40.92 |
+19:36:12.8 |
HIP 80573 |
16.56 |
| 2026-06-01 12:00 |
16:27:36.34 |
+19:36:17.1 |
HIP 80573 |
16.09 |
| 2026-06-02 00:00 |
16:27:31.76 |
+19:36:21.0 |
HIP 80573 |
15.67 |
| 2026-06-02 12:00 |
16:27:27.18 |
+19:36:24.5 |
HIP 80573 |
15.31 |
| 2026-06-03 00:00 |
16:27:22.60 |
+19:36:27.5 |
HIP 80573 |
15.01 |
| 2026-06-03 12:00 |
16:27:18.03 |
+19:36:30.2 |
HIP 80573 |
14.78 |
| 2026-06-04 00:00 |
16:27:13.47 |
+19:36:32.4 |
HIP 80573 |
14.61 |
| 2026-06-04 12:00 |
16:27:08.90 |
+19:36:34.2 |
HIP 80573 |
14.52 |
| 2026-06-05 00:00 |
16:27:04.35 |
+19:36:35.6 |
HIP 80573 |
14.50 |
| 2026-06-05 12:00 |
16:26:59.79 |
+19:36:36.6 |
HIP 80573 |
14.55 |
| 2026-06-06 00:00 |
16:26:55.25 |
+19:36:37.2 |
HIP 80573 |
14.68 |
| 2026-06-06 12:00 |
16:26:50.71 |
+19:36:37.3 |
HIP 80573 |
14.87 |
| 2026-06-07 00:00 |
16:26:46.17 |
+19:36:37.0 |
HIP 80573 |
15.13 |
| 2026-06-07 12:00 |
16:26:41.65 |
+19:36:36.4 |
HIP 80573 |
15.45 |
| 2026-06-08 00:00 |
16:26:37.13 |
+19:36:35.3 |
HIP 80573 |
15.84 |
| 2026-06-08 12:00 |
16:26:32.61 |
+19:36:33.7 |
HIP 80573 |
16.27 |
| 2026-06-09 00:00 |
16:26:28.11 |
+19:36:31.8 |
HIP 80573 |
16.75 |
| 2026-06-09 12:00 |
16:26:23.61 |
+19:36:29.5 |
HIP 80573 |
17.28 |
| 2026-06-10 00:00 |
16:26:19.13 |
+19:36:26.7 |
HIP 80573 |
17.85 |
| 2026-06-10 12:00 |
16:26:14.65 |
+19:36:23.5 |
HIP 80573 |
18.46 |
| 2026-06-11 00:00 |
16:26:10.18 |
+19:36:19.9 |
HIP 80573 |
19.10 |
| 2026-06-11 12:00 |
16:26:05.72 |
+19:36:15.9 |
HIP 80573 |
19.77 |
| 2026-06-12 00:00 |
16:26:01.27 |
+19:36:11.5 |
HIP 80573 |
20.46 |
| 2026-06-12 12:00 |
16:25:56.84 |
+19:36:06.6 |
HIP 80573 |
21.18 |
| 2026-06-13 00:00 |
16:25:52.41 |
+19:36:01.4 |
HIP 80573 |
21.91 |
| 2026-06-13 12:00 |
16:25:47.99 |
+19:35:55.7 |
HIP 80573 |
22.67 |
| 2026-06-14 00:00 |
16:25:43.59 |
+19:35:49.6 |
HIP 80444 |
22.41 |
| 2026-06-14 12:00 |
16:25:39.20 |
+19:35:43.1 |
HIP 80444 |
22.03 |
| 2026-06-15 00:00 |
16:25:34.82 |
+19:35:36.2 |
HIP 80444 |
21.68 |
| 2026-06-15 12:00 |
16:25:30.46 |
+19:35:28.9 |
HIP 80334 |
21.32 |
| 2026-06-16 00:00 |
16:25:26.11 |
+19:35:21.1 |
HIP 80334 |
20.32 |
| 2026-06-16 12:00 |
16:25:21.77 |
+19:35:13.0 |
HIP 80334 |
19.33 |
| 2026-06-17 00:00 |
16:25:17.45 |
+19:35:04.4 |
HIP 80334 |
18.35 |
| 2026-06-17 12:00 |
16:25:13.14 |
+19:34:55.4 |
HIP 80334 |
17.37 |
| 2026-06-18 00:00 |
16:25:08.85 |
+19:34:46.0 |
HIP 80334 |
16.41 |
| 2026-06-18 12:00 |
16:25:04.57 |
+19:34:36.2 |
HIP 80334 |
15.46 |
| 2026-06-19 00:00 |
16:25:00.31 |
+19:34:26.0 |
HIP 80334 |
14.53 |
| 2026-06-19 12:00 |
16:24:56.06 |
+19:34:15.4 |
HIP 80334 |
13.61 |
| 2026-06-20 00:00 |
16:24:51.83 |
+19:34:04.4 |
HIP 80334 |
12.71 |
| 2026-06-20 12:00 |
16:24:47.62 |
+19:33:53.0 |
HIP 80334 |
11.84 |
| 2026-06-21 00:00 |
16:24:43.43 |
+19:33:41.2 |
HIP 80334 |
11.00 |
| 2026-06-21 12:00 |
16:24:39.25 |
+19:33:29.0 |
HIP 80334 |
10.20 |
| 2026-06-22 00:00 |
16:24:35.09 |
+19:33:16.4 |
HIP 80334 |
9.44 |