메타데이터
| 항목 |
값 |
| Designation |
C/2003 G2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-04-29T22:13:50.937600Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:28Z |
| Obs used |
112 |
| NEO |
- |
| M1 |
16.700 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2003-04-15.0000000 |
| e |
0.99641357 |
| q (au) |
1.553361 |
| a (au) |
433.122485 |
| i (deg) |
96.166608 |
| Ω (om, deg) |
24.567711 |
| ω (w, deg) |
190.673723 |
| M (ma, deg) |
359.998368 |
밝기
산란 + 전체 선형
$$
M_a = (16.219 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.219 |
| n |
6.000 |
| gf |
0.998 |
| gb |
-0.598 |
| k |
0.967 |
| δ90 |
8.030 |
| 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) |
| 2026-03-26 00:00 |
01:48:44.61 |
+00:11:10.3 |
HIP 8341 |
17.29 |
| 2026-03-26 12:00 |
01:48:46.83 |
+00:11:27.6 |
HIP 8393 |
17.35 |
| 2026-03-27 00:00 |
01:48:49.07 |
+00:11:44.9 |
HIP 8393 |
17.34 |
| 2026-03-27 12:00 |
01:48:51.31 |
+00:12:02.2 |
HIP 8393 |
17.35 |
| 2026-03-28 00:00 |
01:48:53.56 |
+00:12:19.5 |
HIP 8393 |
17.39 |
| 2026-03-28 12:00 |
01:48:55.81 |
+00:12:36.7 |
HIP 8393 |
17.45 |
| 2026-03-29 00:00 |
01:48:58.08 |
+00:12:53.9 |
HIP 8393 |
17.54 |
| 2026-03-29 12:00 |
01:49:00.35 |
+00:13:11.1 |
HIP 8393 |
17.65 |
| 2026-03-30 00:00 |
01:49:02.63 |
+00:13:28.3 |
HIP 8393 |
17.79 |
| 2026-03-30 12:00 |
01:49:04.91 |
+00:13:45.4 |
HIP 8393 |
17.94 |
| 2026-03-31 00:00 |
01:49:07.21 |
+00:14:02.6 |
HIP 8393 |
18.12 |
| 2026-03-31 12:00 |
01:49:09.50 |
+00:14:19.7 |
HIP 8393 |
18.33 |
| 2026-04-01 00:00 |
01:49:11.81 |
+00:14:36.7 |
HIP 8393 |
18.55 |
| 2026-04-01 12:00 |
01:49:14.12 |
+00:14:53.8 |
HIP 8393 |
18.79 |
| 2026-04-02 00:00 |
01:49:16.44 |
+00:15:10.8 |
HIP 8393 |
19.06 |
| 2026-04-02 12:00 |
01:49:18.76 |
+00:15:27.8 |
HIP 8393 |
19.34 |
| 2026-04-03 00:00 |
01:49:21.09 |
+00:15:44.7 |
HIP 8393 |
19.64 |
| 2026-04-03 12:00 |
01:49:23.43 |
+00:16:01.6 |
HIP 8393 |
19.97 |
| 2026-04-04 00:00 |
01:49:25.77 |
+00:16:18.5 |
HIP 8393 |
20.30 |
| 2026-04-04 12:00 |
01:49:28.11 |
+00:16:35.4 |
HIP 8393 |
20.66 |
| 2026-04-05 00:00 |
01:49:30.46 |
+00:16:52.2 |
HIP 8393 |
21.03 |
| 2026-04-05 12:00 |
01:49:32.82 |
+00:17:09.0 |
HIP 8393 |
21.41 |
| 2026-04-06 00:00 |
01:49:35.18 |
+00:17:25.8 |
HIP 8393 |
21.81 |
| 2026-04-06 12:00 |
01:49:37.55 |
+00:17:42.5 |
HIP 8393 |
22.22 |
| 2026-04-07 00:00 |
01:49:39.92 |
+00:17:59.1 |
HIP 8393 |
22.65 |
| 2026-04-07 12:00 |
01:49:42.29 |
+00:18:15.8 |
HIP 8393 |
23.08 |
| 2026-04-08 00:00 |
01:49:44.67 |
+00:18:32.4 |
HIP 8393 |
23.53 |
| 2026-04-08 12:00 |
01:49:47.06 |
+00:18:48.9 |
HIP 8393 |
23.99 |
| 2026-04-09 00:00 |
01:49:49.44 |
+00:19:05.4 |
HIP 8393 |
24.46 |
| 2026-04-09 12:00 |
01:49:51.84 |
+00:19:21.9 |
HIP 8393 |
24.94 |
| 2026-04-10 00:00 |
01:49:54.23 |
+00:19:38.3 |
HIP 8393 |
25.42 |
| 2026-04-10 12:00 |
01:49:56.63 |
+00:19:54.7 |
HIP 8393 |
25.92 |
| 2026-04-11 00:00 |
01:49:59.03 |
+00:20:11.0 |
HIP 8393 |
26.42 |
| 2026-04-11 12:00 |
01:50:01.43 |
+00:20:27.3 |
HIP 8393 |
26.94 |
| 2026-04-12 00:00 |
01:50:03.84 |
+00:20:43.6 |
HIP 8393 |
27.45 |
| 2026-04-12 12:00 |
01:50:06.25 |
+00:20:59.8 |
HIP 8393 |
27.98 |
| 2026-04-13 00:00 |
01:50:08.66 |
+00:21:15.9 |
HIP 8393 |
28.51 |
| 2026-04-13 12:00 |
01:50:11.08 |
+00:21:32.0 |
HIP 8393 |
29.05 |
| 2026-04-14 00:00 |
01:50:13.50 |
+00:21:48.0 |
HIP 8393 |
29.60 |
| 2026-04-14 12:00 |
01:50:15.92 |
+00:22:04.0 |
HIP 8393 |
30.14 |
| 2026-04-15 00:00 |
01:50:18.34 |
+00:22:19.9 |
HIP 8393 |
30.70 |
| 2026-04-15 12:00 |
01:50:20.76 |
+00:22:35.8 |
HIP 8639 |
31.19 |
| 2026-04-16 00:00 |
01:50:23.18 |
+00:22:51.6 |
HIP 8639 |
30.65 |