메타데이터
| 항목 |
값 |
| Designation |
C/2010 E1 (Garradd) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2009-11-07T23:08:12.848640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:41Z |
| Obs used |
143 |
| NEO |
- |
| M1 |
11.900 |
| K1 |
9.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2010-03-31.0000000 |
| e |
0.97588616 |
| q (au) |
2.662197 |
| a (au) |
110.401201 |
| i (deg) |
71.697804 |
| Ω (om, deg) |
169.292426 |
| ω (w, deg) |
296.986669 |
| M (ma, deg) |
0.121531 |
밝기
산란 + 전체 선형
$$
M_a = (13.469 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.469 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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 |
17:10:44.32 |
+49:52:29.3 |
HIP 84108 |
11.87 |
| 2026-07-29 12:00 |
17:10:41.03 |
+49:51:52.5 |
HIP 84108 |
11.90 |
| 2026-07-30 00:00 |
17:10:37.78 |
+49:51:15.4 |
HIP 84108 |
11.98 |
| 2026-07-30 12:00 |
17:10:34.57 |
+49:50:38.0 |
HIP 83956 |
11.65 |
| 2026-07-31 00:00 |
17:10:31.39 |
+49:50:00.3 |
HIP 83956 |
10.85 |
| 2026-07-31 12:00 |
17:10:28.26 |
+49:49:22.3 |
HIP 83956 |
10.05 |
| 2026-08-01 00:00 |
17:10:25.15 |
+49:48:44.0 |
HIP 83956 |
9.25 |
| 2026-08-01 12:00 |
17:10:22.09 |
+49:48:05.4 |
HIP 83956 |
8.45 |
| 2026-08-02 00:00 |
17:10:19.06 |
+49:47:26.6 |
HIP 83956 |
7.66 |
| 2026-08-02 12:00 |
17:10:16.07 |
+49:46:47.5 |
HIP 83956 |
6.87 |
| 2026-08-03 00:00 |
17:10:13.12 |
+49:46:08.1 |
HIP 83956 |
6.10 |
| 2026-08-03 12:00 |
17:10:10.21 |
+49:45:28.5 |
HIP 83956 |
5.33 |
| 2026-08-04 00:00 |
17:10:07.33 |
+49:44:48.6 |
HIP 83956 |
4.59 |
| 2026-08-04 12:00 |
17:10:04.49 |
+49:44:08.4 |
HIP 83956 |
3.87 |
| 2026-08-05 00:00 |
17:10:01.70 |
+49:43:27.9 |
HIP 83956 |
3.21 |
| 2026-08-05 12:00 |
17:09:58.94 |
+49:42:47.2 |
HIP 83956 |
2.64 |
| 2026-08-06 00:00 |
17:09:56.22 |
+49:42:06.3 |
HIP 83956 |
2.23 |
| 2026-08-06 12:00 |
17:09:53.54 |
+49:41:25.1 |
HIP 83956 |
2.08 |
| 2026-08-07 00:00 |
17:09:50.90 |
+49:40:43.6 |
HIP 83956 |
2.24 |
| 2026-08-07 12:00 |
17:09:48.30 |
+49:40:01.9 |
HIP 83956 |
2.66 |
| 2026-08-08 00:00 |
17:09:45.74 |
+49:39:20.0 |
HIP 83956 |
3.24 |
| 2026-08-08 12:00 |
17:09:43.22 |
+49:38:37.8 |
HIP 83956 |
3.90 |
| 2026-08-09 00:00 |
17:09:40.74 |
+49:37:55.3 |
HIP 83956 |
4.62 |
| 2026-08-09 12:00 |
17:09:38.30 |
+49:37:12.7 |
HIP 83956 |
5.37 |
| 2026-08-10 00:00 |
17:09:35.91 |
+49:36:29.8 |
HIP 83956 |
6.14 |
| 2026-08-10 12:00 |
17:09:33.55 |
+49:35:46.7 |
HIP 83956 |
6.92 |
| 2026-08-11 00:00 |
17:09:31.24 |
+49:35:03.3 |
HIP 83956 |
7.70 |
| 2026-08-11 12:00 |
17:09:28.97 |
+49:34:19.7 |
HIP 83956 |
8.50 |
| 2026-08-12 00:00 |
17:09:26.73 |
+49:33:36.0 |
HIP 83956 |
9.30 |
| 2026-08-12 12:00 |
17:09:24.55 |
+49:32:52.0 |
HIP 83956 |
10.10 |
| 2026-08-13 00:00 |
17:09:22.40 |
+49:32:07.8 |
HIP 83956 |
10.91 |
| 2026-08-13 12:00 |
17:09:20.30 |
+49:31:23.3 |
HIP 83956 |
11.72 |
| 2026-08-14 00:00 |
17:09:18.24 |
+49:30:38.7 |
HIP 83956 |
12.53 |
| 2026-08-14 12:00 |
17:09:16.22 |
+49:29:53.9 |
HIP 83956 |
13.34 |
| 2026-08-15 00:00 |
17:09:14.24 |
+49:29:08.9 |
HIP 83956 |
14.16 |
| 2026-08-15 12:00 |
17:09:12.31 |
+49:28:23.7 |
HIP 83956 |
14.97 |
| 2026-08-16 00:00 |
17:09:10.42 |
+49:27:38.3 |
HIP 83956 |
15.79 |
| 2026-08-16 12:00 |
17:09:08.58 |
+49:26:52.7 |
HIP 83956 |
16.60 |
| 2026-08-17 00:00 |
17:09:06.77 |
+49:26:07.0 |
HIP 84038 |
17.01 |
| 2026-08-17 12:00 |
17:09:05.01 |
+49:25:21.0 |
HIP 84038 |
17.06 |
| 2026-08-18 00:00 |
17:09:03.30 |
+49:24:34.9 |
HIP 84038 |
17.15 |
| 2026-08-18 12:00 |
17:09:01.63 |
+49:23:48.6 |
HIP 84038 |
17.26 |
| 2026-08-19 00:00 |
17:09:00.00 |
+49:23:02.2 |
HIP 84038 |
17.41 |