메타데이터
| 항목 |
값 |
| Designation |
C/2008 E3 (Garradd) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-08-02T05:22:47.424000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:17Z |
| Obs used |
109 |
| NEO |
- |
| M1 |
6.600 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-08-09.0000000 |
| e |
0.99849003 |
| q (au) |
5.531015 |
| a (au) |
3662.996730 |
| i (deg) |
105.076501 |
| Ω (om, deg) |
105.674911 |
| ω (w, deg) |
218.094534 |
| M (ma, deg) |
0.000030 |
밝기
산란 + 전체 선형
$$
M_a = (2.326 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
2.326 |
| n |
6.000 |
| 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 |
07:15:55.77 |
+13:24:35.0 |
HIP 35124 |
27.49 |
| 2026-07-29 12:00 |
07:15:58.95 |
+13:24:31.3 |
HIP 35124 |
27.66 |
| 2026-07-30 00:00 |
07:16:02.12 |
+13:24:27.7 |
HIP 35124 |
27.84 |
| 2026-07-30 12:00 |
07:16:05.28 |
+13:24:23.9 |
HIP 35124 |
28.05 |
| 2026-07-31 00:00 |
07:16:08.43 |
+13:24:20.2 |
HIP 35124 |
28.28 |
| 2026-07-31 12:00 |
07:16:11.58 |
+13:24:16.3 |
HIP 35124 |
28.53 |
| 2026-08-01 00:00 |
07:16:14.71 |
+13:24:12.5 |
HIP 35124 |
28.79 |
| 2026-08-01 12:00 |
07:16:17.83 |
+13:24:08.6 |
HIP 35124 |
29.07 |
| 2026-08-02 00:00 |
07:16:20.94 |
+13:24:04.6 |
HIP 35124 |
29.37 |
| 2026-08-02 12:00 |
07:16:24.05 |
+13:24:00.6 |
HIP 35124 |
29.69 |
| 2026-08-03 00:00 |
07:16:27.14 |
+13:23:56.6 |
HIP 35268 |
30.00 |
| 2026-08-03 12:00 |
07:16:30.22 |
+13:23:52.5 |
HIP 35268 |
29.80 |
| 2026-08-04 00:00 |
07:16:33.29 |
+13:23:48.4 |
HIP 35268 |
29.63 |
| 2026-08-04 12:00 |
07:16:36.34 |
+13:23:44.2 |
HIP 35268 |
29.47 |
| 2026-08-05 00:00 |
07:16:39.39 |
+13:23:40.0 |
HIP 35268 |
29.33 |
| 2026-08-05 12:00 |
07:16:42.43 |
+13:23:35.8 |
HIP 35268 |
29.21 |
| 2026-08-06 00:00 |
07:16:45.45 |
+13:23:31.5 |
HIP 35268 |
29.11 |
| 2026-08-06 12:00 |
07:16:48.46 |
+13:23:27.2 |
HIP 35268 |
29.03 |
| 2026-08-07 00:00 |
07:16:51.46 |
+13:23:22.8 |
HIP 35268 |
28.98 |
| 2026-08-07 12:00 |
07:16:54.44 |
+13:23:18.4 |
HIP 35268 |
28.94 |
| 2026-08-08 00:00 |
07:16:57.42 |
+13:23:14.0 |
HIP 35268 |
28.91 |
| 2026-08-08 12:00 |
07:17:00.38 |
+13:23:09.5 |
HIP 35268 |
28.91 |
| 2026-08-09 00:00 |
07:17:03.33 |
+13:23:05.0 |
HIP 35268 |
28.93 |
| 2026-08-09 12:00 |
07:17:06.26 |
+13:23:00.4 |
HIP 35268 |
28.97 |
| 2026-08-10 00:00 |
07:17:09.18 |
+13:22:55.8 |
HIP 35268 |
29.02 |
| 2026-08-10 12:00 |
07:17:12.09 |
+13:22:51.2 |
HIP 35268 |
29.09 |
| 2026-08-11 00:00 |
07:17:14.98 |
+13:22:46.6 |
HIP 35268 |
29.18 |
| 2026-08-11 12:00 |
07:17:17.86 |
+13:22:41.9 |
HIP 35268 |
29.29 |
| 2026-08-12 00:00 |
07:17:20.72 |
+13:22:37.2 |
HIP 35268 |
29.41 |
| 2026-08-12 12:00 |
07:17:23.57 |
+13:22:32.5 |
HIP 35268 |
29.55 |
| 2026-08-13 00:00 |
07:17:26.40 |
+13:22:27.7 |
HIP 35268 |
29.71 |
| 2026-08-13 12:00 |
07:17:29.22 |
+13:22:22.9 |
HIP 35268 |
29.88 |
| 2026-08-14 00:00 |
07:17:32.03 |
+13:22:18.1 |
HIP 35268 |
30.06 |
| 2026-08-14 12:00 |
07:17:34.81 |
+13:22:13.2 |
HIP 35268 |
30.26 |
| 2026-08-15 00:00 |
07:17:37.59 |
+13:22:08.3 |
HIP 35268 |
30.48 |
| 2026-08-15 12:00 |
07:17:40.34 |
+13:22:03.4 |
HIP 35268 |
30.70 |
| 2026-08-16 00:00 |
07:17:43.08 |
+13:21:58.5 |
HIP 35268 |
30.94 |
| 2026-08-16 12:00 |
07:17:45.81 |
+13:21:53.5 |
HIP 35268 |
31.19 |
| 2026-08-17 00:00 |
07:17:48.51 |
+13:21:48.6 |
HIP 35268 |
31.45 |
| 2026-08-17 12:00 |
07:17:51.20 |
+13:21:43.6 |
HIP 35268 |
31.73 |
| 2026-08-18 00:00 |
07:17:53.88 |
+13:21:38.5 |
HIP 35268 |
32.01 |
| 2026-08-18 12:00 |
07:17:56.53 |
+13:21:33.5 |
HIP 35268 |
32.30 |
| 2026-08-19 00:00 |
07:17:59.17 |
+13:21:28.4 |
HIP 35268 |
32.60 |