메타데이터
| 항목 |
값 |
| Designation |
C/2011 Q1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-06-29T10:55:01.718400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:54Z |
| Obs used |
59 |
| NEO |
- |
| M1 |
7.500 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-09-21.0000000 |
| e |
0.99791265 |
| q (au) |
6.780085 |
| a (au) |
3248.185456 |
| i (deg) |
94.862014 |
| Ω (om, deg) |
142.243907 |
| ω (w, deg) |
135.926448 |
| M (ma, deg) |
0.000445 |
밝기
산란 + 전체 선형
$$
M_a = (2.217 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
2.217 |
| n |
6.000 |
| gf |
0.994 |
| gb |
-0.711 |
| 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) |
| 2026-07-29 00:00 |
04:36:51.48 |
-75:04:40.9 |
HIP 21968 |
35.61 |
| 2026-07-29 12:00 |
04:37:02.15 |
-75:05:28.9 |
HIP 21968 |
35.69 |
| 2026-07-30 00:00 |
04:37:12.73 |
-75:06:17.2 |
HIP 21968 |
35.81 |
| 2026-07-30 12:00 |
04:37:23.22 |
-75:07:05.7 |
HIP 21968 |
35.97 |
| 2026-07-31 00:00 |
04:37:33.62 |
-75:07:54.5 |
HIP 21968 |
36.16 |
| 2026-07-31 12:00 |
04:37:43.93 |
-75:08:43.5 |
HIP 21968 |
36.39 |
| 2026-08-01 00:00 |
04:37:54.14 |
-75:09:32.7 |
HIP 21968 |
36.66 |
| 2026-08-01 12:00 |
04:38:04.26 |
-75:10:22.2 |
HIP 22259 |
36.90 |
| 2026-08-02 00:00 |
04:38:14.28 |
-75:11:11.8 |
HIP 22259 |
36.40 |
| 2026-08-02 12:00 |
04:38:24.21 |
-75:12:01.8 |
HIP 22259 |
35.92 |
| 2026-08-03 00:00 |
04:38:34.04 |
-75:12:51.9 |
HIP 22259 |
35.47 |
| 2026-08-03 12:00 |
04:38:43.77 |
-75:13:42.3 |
HIP 22259 |
35.06 |
| 2026-08-04 00:00 |
04:38:53.41 |
-75:14:32.8 |
HIP 22259 |
34.69 |
| 2026-08-04 12:00 |
04:39:02.94 |
-75:15:23.6 |
HIP 22259 |
34.35 |
| 2026-08-05 00:00 |
04:39:12.38 |
-75:16:14.6 |
HIP 22259 |
34.04 |
| 2026-08-05 12:00 |
04:39:21.72 |
-75:17:05.9 |
HIP 22259 |
33.78 |
| 2026-08-06 00:00 |
04:39:30.96 |
-75:17:57.3 |
HIP 22259 |
33.55 |
| 2026-08-06 12:00 |
04:39:40.09 |
-75:18:48.9 |
HIP 22259 |
33.36 |
| 2026-08-07 00:00 |
04:39:49.13 |
-75:19:40.8 |
HIP 22259 |
33.22 |
| 2026-08-07 12:00 |
04:39:58.06 |
-75:20:32.8 |
HIP 22259 |
33.11 |
| 2026-08-08 00:00 |
04:40:06.89 |
-75:21:25.0 |
HIP 22259 |
33.04 |
| 2026-08-08 12:00 |
04:40:15.61 |
-75:22:17.4 |
HIP 22259 |
33.01 |
| 2026-08-09 00:00 |
04:40:24.22 |
-75:23:10.0 |
HIP 22259 |
33.03 |
| 2026-08-09 12:00 |
04:40:32.73 |
-75:24:02.8 |
HIP 22259 |
33.08 |
| 2026-08-10 00:00 |
04:40:41.13 |
-75:24:55.8 |
HIP 22259 |
33.18 |
| 2026-08-10 12:00 |
04:40:49.43 |
-75:25:49.0 |
HIP 22259 |
33.31 |
| 2026-08-11 00:00 |
04:40:57.61 |
-75:26:42.3 |
HIP 22259 |
33.49 |
| 2026-08-11 12:00 |
04:41:05.69 |
-75:27:35.8 |
HIP 22259 |
33.70 |
| 2026-08-12 00:00 |
04:41:13.65 |
-75:28:29.5 |
HIP 22259 |
33.95 |
| 2026-08-12 12:00 |
04:41:21.51 |
-75:29:23.3 |
HIP 22259 |
34.23 |
| 2026-08-13 00:00 |
04:41:29.25 |
-75:30:17.3 |
HIP 22259 |
34.56 |
| 2026-08-13 12:00 |
04:41:36.88 |
-75:31:11.5 |
HIP 22259 |
34.91 |
| 2026-08-14 00:00 |
04:41:44.40 |
-75:32:05.8 |
HIP 22259 |
35.30 |
| 2026-08-14 12:00 |
04:41:51.80 |
-75:33:00.2 |
HIP 22259 |
35.72 |
| 2026-08-15 00:00 |
04:41:59.08 |
-75:33:54.8 |
HIP 22259 |
36.18 |
| 2026-08-15 12:00 |
04:42:06.26 |
-75:34:49.6 |
HIP 22259 |
36.66 |
| 2026-08-16 00:00 |
04:42:13.31 |
-75:35:44.5 |
HIP 22259 |
37.17 |
| 2026-08-16 12:00 |
04:42:20.25 |
-75:36:39.5 |
HIP 22259 |
37.70 |
| 2026-08-17 00:00 |
04:42:27.07 |
-75:37:34.7 |
HIP 22259 |
38.27 |
| 2026-08-17 12:00 |
04:42:33.78 |
-75:38:29.9 |
HIP 22259 |
38.85 |
| 2026-08-18 00:00 |
04:42:40.36 |
-75:39:25.3 |
HIP 22022 |
39.26 |
| 2026-08-18 12:00 |
04:42:46.83 |
-75:40:20.9 |
HIP 22022 |
38.29 |
| 2026-08-19 00:00 |
04:42:53.17 |
-75:41:16.5 |
HIP 22022 |
37.32 |