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) |
| 2026-05-12 00:00 |
17:22:56.93 |
+50:07:57.1 |
HIP 84892 |
19.13 |
| 2026-05-12 12:00 |
17:22:52.49 |
+50:08:24.2 |
HIP 84892 |
18.51 |
| 2026-05-13 00:00 |
17:22:48.03 |
+50:08:50.9 |
HIP 84892 |
17.91 |
| 2026-05-13 12:00 |
17:22:43.55 |
+50:09:17.2 |
HIP 84892 |
17.32 |
| 2026-05-14 00:00 |
17:22:39.04 |
+50:09:43.1 |
HIP 84892 |
16.75 |
| 2026-05-14 12:00 |
17:22:34.50 |
+50:10:08.6 |
HIP 84892 |
16.20 |
| 2026-05-15 00:00 |
17:22:29.94 |
+50:10:33.8 |
HIP 84892 |
15.66 |
| 2026-05-15 12:00 |
17:22:25.36 |
+50:10:58.5 |
HIP 84892 |
15.15 |
| 2026-05-16 00:00 |
17:22:20.76 |
+50:11:22.8 |
HIP 84892 |
14.67 |
| 2026-05-16 12:00 |
17:22:16.13 |
+50:11:46.7 |
HIP 84892 |
14.21 |
| 2026-05-17 00:00 |
17:22:11.48 |
+50:12:10.2 |
HIP 84892 |
13.78 |
| 2026-05-17 12:00 |
17:22:06.81 |
+50:12:33.3 |
HIP 84892 |
13.38 |
| 2026-05-18 00:00 |
17:22:02.12 |
+50:12:56.0 |
HIP 84892 |
13.02 |
| 2026-05-18 12:00 |
17:21:57.41 |
+50:13:18.2 |
HIP 84892 |
12.69 |
| 2026-05-19 00:00 |
17:21:52.67 |
+50:13:40.1 |
HIP 84892 |
12.41 |
| 2026-05-19 12:00 |
17:21:47.92 |
+50:14:01.5 |
HIP 84892 |
12.17 |
| 2026-05-20 00:00 |
17:21:43.15 |
+50:14:22.6 |
HIP 84892 |
11.98 |
| 2026-05-20 12:00 |
17:21:38.36 |
+50:14:43.2 |
HIP 84892 |
11.84 |
| 2026-05-21 00:00 |
17:21:33.55 |
+50:15:03.3 |
HIP 84892 |
11.75 |
| 2026-05-21 12:00 |
17:21:28.72 |
+50:15:23.1 |
HIP 84892 |
11.71 |
| 2026-05-22 00:00 |
17:21:23.88 |
+50:15:42.4 |
HIP 84892 |
11.72 |
| 2026-05-22 12:00 |
17:21:19.01 |
+50:16:01.3 |
HIP 84892 |
11.79 |
| 2026-05-23 00:00 |
17:21:14.14 |
+50:16:19.8 |
HIP 84892 |
11.91 |
| 2026-05-23 12:00 |
17:21:09.24 |
+50:16:37.9 |
HIP 84892 |
12.08 |
| 2026-05-24 00:00 |
17:21:04.33 |
+50:16:55.5 |
HIP 84892 |
12.29 |
| 2026-05-24 12:00 |
17:20:59.40 |
+50:17:12.7 |
HIP 84892 |
12.56 |
| 2026-05-25 00:00 |
17:20:54.46 |
+50:17:29.5 |
HIP 84892 |
12.86 |
| 2026-05-25 12:00 |
17:20:49.50 |
+50:17:45.8 |
HIP 84892 |
13.20 |
| 2026-05-26 00:00 |
17:20:44.53 |
+50:18:01.7 |
HIP 84892 |
13.58 |
| 2026-05-26 12:00 |
17:20:39.55 |
+50:18:17.2 |
HIP 84892 |
14.00 |
| 2026-05-27 00:00 |
17:20:34.55 |
+50:18:32.2 |
HIP 84892 |
14.44 |
| 2026-05-27 12:00 |
17:20:29.54 |
+50:18:46.8 |
HIP 84892 |
14.91 |
| 2026-05-28 00:00 |
17:20:24.52 |
+50:19:01.0 |
HIP 84892 |
15.41 |
| 2026-05-28 12:00 |
17:20:19.49 |
+50:19:14.7 |
HIP 84892 |
15.93 |
| 2026-05-29 00:00 |
17:20:14.44 |
+50:19:28.0 |
HIP 84892 |
16.47 |
| 2026-05-29 12:00 |
17:20:09.38 |
+50:19:40.9 |
HIP 84892 |
17.03 |
| 2026-05-30 00:00 |
17:20:04.31 |
+50:19:53.3 |
HIP 84892 |
17.60 |
| 2026-05-30 12:00 |
17:19:59.23 |
+50:20:05.3 |
HIP 84892 |
18.19 |
| 2026-05-31 00:00 |
17:19:54.15 |
+50:20:16.8 |
HIP 84892 |
18.80 |
| 2026-05-31 12:00 |
17:19:49.05 |
+50:20:27.9 |
HIP 84892 |
19.41 |
| 2026-06-01 00:00 |
17:19:43.94 |
+50:20:38.6 |
HIP 84892 |
20.04 |
| 2026-06-01 12:00 |
17:19:38.82 |
+50:20:48.8 |
HIP 84892 |
20.67 |
| 2026-06-02 00:00 |
17:19:33.70 |
+50:20:58.6 |
HIP 84892 |
21.32 |