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) |
| 2026-09-25 00:00 |
16:48:40.93 |
-14:28:29.3 |
HIP 82323 |
10.47 |
| 2026-09-25 12:00 |
16:48:42.41 |
-14:28:38.2 |
HIP 82323 |
10.28 |
| 2026-09-26 00:00 |
16:48:43.93 |
-14:28:47.2 |
HIP 82323 |
10.09 |
| 2026-09-26 12:00 |
16:48:45.47 |
-14:28:56.1 |
HIP 82323 |
9.92 |
| 2026-09-27 00:00 |
16:48:47.03 |
-14:29:05.1 |
HIP 82323 |
9.75 |
| 2026-09-27 12:00 |
16:48:48.62 |
-14:29:14.1 |
HIP 82323 |
9.60 |
| 2026-09-28 00:00 |
16:48:50.24 |
-14:29:23.1 |
HIP 82323 |
9.45 |
| 2026-09-28 12:00 |
16:48:51.88 |
-14:29:32.1 |
HIP 82323 |
9.32 |
| 2026-09-29 00:00 |
16:48:53.54 |
-14:29:41.2 |
HIP 82323 |
9.20 |
| 2026-09-29 12:00 |
16:48:55.23 |
-14:29:50.3 |
HIP 82323 |
9.10 |
| 2026-09-30 00:00 |
16:48:56.94 |
-14:29:59.3 |
HIP 82323 |
9.02 |
| 2026-09-30 12:00 |
16:48:58.68 |
-14:30:08.5 |
HIP 82323 |
8.96 |
| 2026-10-01 00:00 |
16:49:00.44 |
-14:30:17.6 |
HIP 82323 |
8.91 |
| 2026-10-01 12:00 |
16:49:02.23 |
-14:30:26.7 |
HIP 82323 |
8.89 |
| 2026-10-02 00:00 |
16:49:04.04 |
-14:30:35.9 |
HIP 82323 |
8.89 |
| 2026-10-02 12:00 |
16:49:05.88 |
-14:30:45.1 |
HIP 82323 |
8.91 |
| 2026-10-03 00:00 |
16:49:07.74 |
-14:30:54.3 |
HIP 82323 |
8.95 |
| 2026-10-03 12:00 |
16:49:09.62 |
-14:31:03.5 |
HIP 82323 |
9.02 |
| 2026-10-04 00:00 |
16:49:11.53 |
-14:31:12.7 |
HIP 82323 |
9.12 |
| 2026-10-04 12:00 |
16:49:13.46 |
-14:31:21.9 |
HIP 82323 |
9.24 |
| 2026-10-05 00:00 |
16:49:15.42 |
-14:31:31.2 |
HIP 82323 |
9.38 |
| 2026-10-05 12:00 |
16:49:17.40 |
-14:31:40.4 |
HIP 82323 |
9.55 |
| 2026-10-06 00:00 |
16:49:19.40 |
-14:31:49.7 |
HIP 82323 |
9.74 |
| 2026-10-06 12:00 |
16:49:21.43 |
-14:31:59.0 |
HIP 82323 |
9.95 |
| 2026-10-07 00:00 |
16:49:23.48 |
-14:32:08.3 |
HIP 82323 |
10.19 |
| 2026-10-07 12:00 |
16:49:25.55 |
-14:32:17.6 |
HIP 82323 |
10.45 |
| 2026-10-08 00:00 |
16:49:27.65 |
-14:32:26.9 |
HIP 82323 |
10.73 |
| 2026-10-08 12:00 |
16:49:29.76 |
-14:32:36.2 |
HIP 82323 |
11.03 |
| 2026-10-09 00:00 |
16:49:31.91 |
-14:32:45.5 |
HIP 82323 |
11.35 |
| 2026-10-09 12:00 |
16:49:34.07 |
-14:32:54.9 |
HIP 82323 |
11.69 |
| 2026-10-10 00:00 |
16:49:36.26 |
-14:33:04.2 |
HIP 82323 |
12.05 |
| 2026-10-10 12:00 |
16:49:38.47 |
-14:33:13.6 |
HIP 82323 |
12.42 |
| 2026-10-11 00:00 |
16:49:40.70 |
-14:33:22.9 |
HIP 82323 |
12.81 |
| 2026-10-11 12:00 |
16:49:42.96 |
-14:33:32.3 |
HIP 82323 |
13.22 |
| 2026-10-12 00:00 |
16:49:45.23 |
-14:33:41.6 |
HIP 82323 |
13.64 |
| 2026-10-12 12:00 |
16:49:47.53 |
-14:33:51.0 |
HIP 82323 |
14.07 |
| 2026-10-13 00:00 |
16:49:49.85 |
-14:34:00.3 |
HIP 82323 |
14.52 |
| 2026-10-13 12:00 |
16:49:52.20 |
-14:34:09.7 |
HIP 82323 |
14.97 |
| 2026-10-14 00:00 |
16:49:54.56 |
-14:34:19.1 |
HIP 82323 |
15.45 |
| 2026-10-14 12:00 |
16:49:56.94 |
-14:34:28.4 |
HIP 82323 |
15.93 |
| 2026-10-15 00:00 |
16:49:59.35 |
-14:34:37.8 |
HIP 82323 |
16.42 |
| 2026-10-15 12:00 |
16:50:01.78 |
-14:34:47.1 |
HIP 82323 |
16.92 |
| 2026-10-16 00:00 |
16:50:04.23 |
-14:34:56.5 |
HIP 82323 |
17.44 |