메타데이터
| 항목 |
값 |
| Designation |
C/2003 A2 (Gleason) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-11-05T00:23:36.450240Z |
| Orbit solution date (soln_date, UTC) |
2025-07-31T12:12:22Z |
| Obs used |
165 |
| NEO |
- |
| M1 |
6.500 |
| K1 |
7.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2003-08-08.0000000 |
| e |
1.00694108 |
| q (au) |
11.427006 |
| a (au) |
-1646.285863 |
| i (deg) |
8.061536 |
| Ω (om, deg) |
154.544669 |
| ω (w, deg) |
346.638010 |
| M (ma, deg) |
-0.001313 |
밝기
산란 + 전체 선형
$$
M_a = (-2.177 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
-2.177 |
| n |
6.000 |
| gf |
0.900 |
| gb |
-0.974 |
| k |
1.000 |
| δ90 |
4.423 |
| 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 |
16:53:35.47 |
-14:18:54.1 |
HIP 82701 |
10.53 |
| 2026-06-01 12:00 |
16:53:32.58 |
-14:18:49.0 |
HIP 82701 |
11.23 |
| 2026-06-02 00:00 |
16:53:29.69 |
-14:18:43.9 |
HIP 82701 |
11.93 |
| 2026-06-02 12:00 |
16:53:26.79 |
-14:18:38.9 |
HIP 82701 |
12.64 |
| 2026-06-03 00:00 |
16:53:23.90 |
-14:18:33.9 |
HIP 82701 |
13.34 |
| 2026-06-03 12:00 |
16:53:21.00 |
-14:18:29.0 |
HIP 82701 |
14.04 |
| 2026-06-04 00:00 |
16:53:18.11 |
-14:18:24.1 |
HIP 82701 |
14.75 |
| 2026-06-04 12:00 |
16:53:15.21 |
-14:18:19.3 |
HIP 82535 |
15.11 |
| 2026-06-05 00:00 |
16:53:12.31 |
-14:18:14.5 |
HIP 82535 |
14.45 |
| 2026-06-05 12:00 |
16:53:09.41 |
-14:18:09.8 |
HIP 82535 |
13.80 |
| 2026-06-06 00:00 |
16:53:06.51 |
-14:18:05.2 |
HIP 82535 |
13.16 |
| 2026-06-06 12:00 |
16:53:03.62 |
-14:18:00.6 |
HIP 82535 |
12.52 |
| 2026-06-07 00:00 |
16:53:00.72 |
-14:17:56.0 |
HIP 82535 |
11.89 |
| 2026-06-07 12:00 |
16:52:57.82 |
-14:17:51.6 |
HIP 82535 |
11.27 |
| 2026-06-08 00:00 |
16:52:54.93 |
-14:17:47.2 |
HIP 82535 |
10.65 |
| 2026-06-08 12:00 |
16:52:52.04 |
-14:17:42.8 |
HIP 82535 |
10.05 |
| 2026-06-09 00:00 |
16:52:49.14 |
-14:17:38.5 |
HIP 82535 |
9.47 |
| 2026-06-09 12:00 |
16:52:46.25 |
-14:17:34.3 |
HIP 82535 |
8.90 |
| 2026-06-10 00:00 |
16:52:43.37 |
-14:17:30.1 |
HIP 82535 |
8.35 |
| 2026-06-10 12:00 |
16:52:40.48 |
-14:17:26.0 |
HIP 82535 |
7.82 |
| 2026-06-11 00:00 |
16:52:37.60 |
-14:17:21.9 |
HIP 82535 |
7.33 |
| 2026-06-11 12:00 |
16:52:34.72 |
-14:17:17.9 |
HIP 82535 |
6.87 |
| 2026-06-12 00:00 |
16:52:31.84 |
-14:17:14.0 |
HIP 82535 |
6.46 |
| 2026-06-12 12:00 |
16:52:28.97 |
-14:17:10.1 |
HIP 82535 |
6.09 |
| 2026-06-13 00:00 |
16:52:26.10 |
-14:17:06.3 |
HIP 82535 |
5.79 |
| 2026-06-13 12:00 |
16:52:23.23 |
-14:17:02.6 |
HIP 82535 |
5.56 |
| 2026-06-14 00:00 |
16:52:20.37 |
-14:16:58.9 |
HIP 82535 |
5.41 |
| 2026-06-14 12:00 |
16:52:17.51 |
-14:16:55.3 |
HIP 82535 |
5.34 |
| 2026-06-15 00:00 |
16:52:14.66 |
-14:16:51.8 |
HIP 82535 |
5.36 |
| 2026-06-15 12:00 |
16:52:11.81 |
-14:16:48.3 |
HIP 82535 |
5.47 |
| 2026-06-16 00:00 |
16:52:08.97 |
-14:16:44.9 |
HIP 82535 |
5.67 |
| 2026-06-16 12:00 |
16:52:06.13 |
-14:16:41.5 |
HIP 82535 |
5.93 |
| 2026-06-17 00:00 |
16:52:03.30 |
-14:16:38.2 |
HIP 82535 |
6.26 |
| 2026-06-17 12:00 |
16:52:00.48 |
-14:16:35.0 |
HIP 82535 |
6.64 |
| 2026-06-18 00:00 |
16:51:57.66 |
-14:16:31.9 |
HIP 82535 |
7.07 |
| 2026-06-18 12:00 |
16:51:54.85 |
-14:16:28.8 |
HIP 82535 |
7.53 |
| 2026-06-19 00:00 |
16:51:52.04 |
-14:16:25.8 |
HIP 82535 |
8.02 |
| 2026-06-19 12:00 |
16:51:49.24 |
-14:16:22.8 |
HIP 82535 |
8.54 |
| 2026-06-20 00:00 |
16:51:46.45 |
-14:16:19.9 |
HIP 82535 |
9.08 |
| 2026-06-20 12:00 |
16:51:43.67 |
-14:16:17.1 |
HIP 82535 |
9.63 |
| 2026-06-21 00:00 |
16:51:40.90 |
-14:16:14.4 |
HIP 82535 |
10.19 |
| 2026-06-21 12:00 |
16:51:38.13 |
-14:16:11.7 |
HIP 82535 |
10.77 |
| 2026-06-22 00:00 |
16:51:35.37 |
-14:16:09.1 |
HIP 82535 |
11.35 |