메타데이터
| 항목 |
값 |
| Designation |
C/2012 S3 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-08-31T03:14:37.167360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:22Z |
| Obs used |
730 |
| NEO |
- |
| M1 |
13.700 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-05-22.0000000 |
| e |
1.00070829 |
| q (au) |
2.308066 |
| a (au) |
-3258.643490 |
| i (deg) |
112.930798 |
| Ω (om, deg) |
121.305818 |
| ω (w, deg) |
183.752733 |
| M (ma, deg) |
-0.000536 |
밝기
산란 + 전체 선형
$$
M_a = (12.451 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.451 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.996 |
| k |
1.000 |
| 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 |
08:26:34.09 |
-08:21:37.1 |
HIP 41343 |
11.56 |
| 2026-05-12 12:00 |
08:26:35.19 |
-08:21:09.0 |
HIP 41343 |
12.10 |
| 2026-05-13 00:00 |
08:26:36.32 |
-08:20:41.1 |
HIP 41343 |
12.64 |
| 2026-05-13 12:00 |
08:26:37.48 |
-08:20:13.3 |
HIP 41343 |
13.18 |
| 2026-05-14 00:00 |
08:26:38.68 |
-08:19:45.8 |
HIP 41343 |
13.72 |
| 2026-05-14 12:00 |
08:26:39.90 |
-08:19:18.4 |
HIP 41343 |
14.27 |
| 2026-05-15 00:00 |
08:26:41.16 |
-08:18:51.3 |
HIP 41343 |
14.82 |
| 2026-05-15 12:00 |
08:26:42.45 |
-08:18:24.3 |
HIP 41343 |
15.37 |
| 2026-05-16 00:00 |
08:26:43.77 |
-08:17:57.6 |
HIP 41343 |
15.92 |
| 2026-05-16 12:00 |
08:26:45.12 |
-08:17:31.0 |
HIP 41343 |
16.48 |
| 2026-05-17 00:00 |
08:26:46.51 |
-08:17:04.7 |
HIP 41343 |
17.04 |
| 2026-05-17 12:00 |
08:26:47.92 |
-08:16:38.6 |
HIP 41343 |
17.59 |
| 2026-05-18 00:00 |
08:26:49.36 |
-08:16:12.7 |
HIP 41343 |
18.15 |
| 2026-05-18 12:00 |
08:26:50.84 |
-08:15:47.0 |
HIP 41499 |
18.16 |
| 2026-05-19 00:00 |
08:26:52.35 |
-08:15:21.5 |
HIP 41499 |
17.61 |
| 2026-05-19 12:00 |
08:26:53.88 |
-08:14:56.2 |
HIP 41499 |
17.06 |
| 2026-05-20 00:00 |
08:26:55.45 |
-08:14:31.1 |
HIP 41499 |
16.50 |
| 2026-05-20 12:00 |
08:26:57.04 |
-08:14:06.3 |
HIP 41499 |
15.94 |
| 2026-05-21 00:00 |
08:26:58.67 |
-08:13:41.7 |
HIP 41499 |
15.38 |
| 2026-05-21 12:00 |
08:27:00.32 |
-08:13:17.3 |
HIP 41499 |
14.81 |
| 2026-05-22 00:00 |
08:27:02.01 |
-08:12:53.1 |
HIP 41499 |
14.24 |
| 2026-05-22 12:00 |
08:27:03.72 |
-08:12:29.1 |
HIP 41499 |
13.67 |
| 2026-05-23 00:00 |
08:27:05.46 |
-08:12:05.3 |
HIP 41499 |
13.09 |
| 2026-05-23 12:00 |
08:27:07.24 |
-08:11:41.8 |
HIP 41499 |
12.51 |
| 2026-05-24 00:00 |
08:27:09.04 |
-08:11:18.5 |
HIP 41499 |
11.93 |
| 2026-05-24 12:00 |
08:27:10.87 |
-08:10:55.4 |
HIP 41499 |
11.35 |
| 2026-05-25 00:00 |
08:27:12.72 |
-08:10:32.6 |
HIP 41499 |
10.76 |
| 2026-05-25 12:00 |
08:27:14.61 |
-08:10:09.9 |
HIP 41499 |
10.16 |
| 2026-05-26 00:00 |
08:27:16.52 |
-08:09:47.5 |
HIP 41499 |
9.57 |
| 2026-05-26 12:00 |
08:27:18.46 |
-08:09:25.3 |
HIP 41499 |
8.97 |
| 2026-05-27 00:00 |
08:27:20.43 |
-08:09:03.4 |
HIP 41499 |
8.37 |
| 2026-05-27 12:00 |
08:27:22.43 |
-08:08:41.6 |
HIP 41499 |
7.76 |
| 2026-05-28 00:00 |
08:27:24.45 |
-08:08:20.1 |
HIP 41499 |
7.15 |
| 2026-05-28 12:00 |
08:27:26.50 |
-08:07:58.9 |
HIP 41499 |
6.54 |
| 2026-05-29 00:00 |
08:27:28.58 |
-08:07:37.8 |
HIP 41499 |
5.93 |
| 2026-05-29 12:00 |
08:27:30.68 |
-08:07:17.0 |
HIP 41499 |
5.31 |
| 2026-05-30 00:00 |
08:27:32.81 |
-08:06:56.4 |
HIP 41499 |
4.69 |
| 2026-05-30 12:00 |
08:27:34.97 |
-08:06:36.1 |
HIP 41499 |
4.07 |
| 2026-05-31 00:00 |
08:27:37.15 |
-08:06:16.0 |
HIP 41499 |
3.44 |
| 2026-05-31 12:00 |
08:27:39.36 |
-08:05:56.1 |
HIP 41499 |
2.82 |
| 2026-06-01 00:00 |
08:27:41.59 |
-08:05:36.4 |
HIP 41499 |
2.21 |
| 2026-06-01 12:00 |
08:27:43.85 |
-08:05:17.0 |
HIP 41499 |
1.60 |
| 2026-06-02 00:00 |
08:27:46.14 |
-08:04:57.9 |
HIP 41499 |
1.04 |