메타데이터
| 항목 |
값 |
| Designation |
C/2013 Y2 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-06-13T15:29:33.463680Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:44Z |
| Obs used |
436 |
| NEO |
- |
| M1 |
9.700 |
| K1 |
15.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-03-11.0000000 |
| e |
0.99127402 |
| q (au) |
1.919085 |
| a (au) |
219.927835 |
| i (deg) |
29.414744 |
| Ω (om, deg) |
243.400925 |
| ω (w, deg) |
308.841643 |
| M (ma, deg) |
359.971399 |
밝기
산란 + 전체 선형
$$
M_a = (10.343 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.343 |
| n |
6.000 |
| gf |
0.855 |
| gb |
-0.679 |
| k |
0.919 |
| 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 |
22:22:40.35 |
+21:08:03.3 |
HIP 110404 |
15.61 |
| 2026-06-01 12:00 |
22:22:40.17 |
+21:08:35.5 |
HIP 110404 |
15.87 |
| 2026-06-02 00:00 |
22:22:39.95 |
+21:09:07.5 |
HIP 110404 |
16.14 |
| 2026-06-02 12:00 |
22:22:39.70 |
+21:09:39.3 |
HIP 110404 |
16.42 |
| 2026-06-03 00:00 |
22:22:39.41 |
+21:10:10.9 |
HIP 110404 |
16.70 |
| 2026-06-03 12:00 |
22:22:39.08 |
+21:10:42.3 |
HIP 110404 |
16.98 |
| 2026-06-04 00:00 |
22:22:38.72 |
+21:11:13.6 |
HIP 110404 |
17.26 |
| 2026-06-04 12:00 |
22:22:38.33 |
+21:11:44.6 |
HIP 110404 |
17.55 |
| 2026-06-05 00:00 |
22:22:37.90 |
+21:12:15.4 |
HIP 110404 |
17.84 |
| 2026-06-05 12:00 |
22:22:37.43 |
+21:12:46.1 |
HIP 110404 |
18.14 |
| 2026-06-06 00:00 |
22:22:36.93 |
+21:13:16.5 |
HIP 110404 |
18.43 |
| 2026-06-06 12:00 |
22:22:36.39 |
+21:13:46.7 |
HIP 110404 |
18.73 |
| 2026-06-07 00:00 |
22:22:35.81 |
+21:14:16.7 |
HIP 110404 |
19.03 |
| 2026-06-07 12:00 |
22:22:35.20 |
+21:14:46.6 |
HIP 110404 |
19.33 |
| 2026-06-08 00:00 |
22:22:34.56 |
+21:15:16.1 |
HIP 110404 |
19.63 |
| 2026-06-08 12:00 |
22:22:33.87 |
+21:15:45.5 |
HIP 110404 |
19.93 |
| 2026-06-09 00:00 |
22:22:33.16 |
+21:16:14.7 |
HIP 110404 |
20.24 |
| 2026-06-09 12:00 |
22:22:32.40 |
+21:16:43.6 |
HIP 110404 |
20.54 |
| 2026-06-10 00:00 |
22:22:31.61 |
+21:17:12.3 |
HIP 110381 |
20.83 |
| 2026-06-10 12:00 |
22:22:30.79 |
+21:17:40.8 |
HIP 110381 |
21.02 |
| 2026-06-11 00:00 |
22:22:29.93 |
+21:18:09.1 |
HIP 110381 |
21.21 |
| 2026-06-11 12:00 |
22:22:29.04 |
+21:18:37.1 |
HIP 110381 |
21.41 |
| 2026-06-12 00:00 |
22:22:28.10 |
+21:19:04.9 |
HIP 110381 |
21.61 |
| 2026-06-12 12:00 |
22:22:27.14 |
+21:19:32.5 |
HIP 110381 |
21.81 |
| 2026-06-13 00:00 |
22:22:26.14 |
+21:19:59.8 |
HIP 110381 |
22.01 |
| 2026-06-13 12:00 |
22:22:25.10 |
+21:20:26.9 |
HIP 110381 |
22.21 |
| 2026-06-14 00:00 |
22:22:24.03 |
+21:20:53.7 |
HIP 110381 |
22.42 |
| 2026-06-14 12:00 |
22:22:22.92 |
+21:21:20.3 |
HIP 110381 |
22.63 |
| 2026-06-15 00:00 |
22:22:21.78 |
+21:21:46.7 |
HIP 110381 |
22.84 |
| 2026-06-15 12:00 |
22:22:20.60 |
+21:22:12.8 |
HIP 110381 |
23.05 |
| 2026-06-16 00:00 |
22:22:19.39 |
+21:22:38.7 |
HIP 110381 |
23.26 |
| 2026-06-16 12:00 |
22:22:18.14 |
+21:23:04.3 |
HIP 110381 |
23.47 |
| 2026-06-17 00:00 |
22:22:16.86 |
+21:23:29.6 |
HIP 110381 |
23.69 |
| 2026-06-17 12:00 |
22:22:15.54 |
+21:23:54.7 |
HIP 110381 |
23.91 |
| 2026-06-18 00:00 |
22:22:14.19 |
+21:24:19.6 |
HIP 110381 |
24.13 |
| 2026-06-18 12:00 |
22:22:12.81 |
+21:24:44.2 |
HIP 110381 |
24.35 |
| 2026-06-19 00:00 |
22:22:11.39 |
+21:25:08.5 |
HIP 110381 |
24.57 |
| 2026-06-19 12:00 |
22:22:09.94 |
+21:25:32.6 |
HIP 110381 |
24.79 |
| 2026-06-20 00:00 |
22:22:08.45 |
+21:25:56.4 |
HIP 110381 |
25.02 |
| 2026-06-20 12:00 |
22:22:06.93 |
+21:26:19.9 |
HIP 110381 |
25.25 |
| 2026-06-21 00:00 |
22:22:05.37 |
+21:26:43.2 |
HIP 110381 |
25.48 |
| 2026-06-21 12:00 |
22:22:03.79 |
+21:27:06.1 |
HIP 110381 |
25.71 |
| 2026-06-22 00:00 |
22:22:02.17 |
+21:27:28.9 |
HIP 110381 |
25.95 |