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) |
| 2026-09-20 00:00 |
07:20:04.37 |
+13:15:53.8 |
HIP 35620 |
17.84 |
| 2026-09-20 12:00 |
07:20:05.53 |
+13:15:48.9 |
HIP 35620 |
17.57 |
| 2026-09-21 00:00 |
07:20:06.67 |
+13:15:44.1 |
HIP 35620 |
17.31 |
| 2026-09-21 12:00 |
07:20:07.77 |
+13:15:39.3 |
HIP 35620 |
17.05 |
| 2026-09-22 00:00 |
07:20:08.85 |
+13:15:34.6 |
HIP 35620 |
16.80 |
| 2026-09-22 12:00 |
07:20:09.90 |
+13:15:29.8 |
HIP 35620 |
16.55 |
| 2026-09-23 00:00 |
07:20:10.92 |
+13:15:25.1 |
HIP 35620 |
16.31 |
| 2026-09-23 12:00 |
07:20:11.92 |
+13:15:20.5 |
HIP 35620 |
16.08 |
| 2026-09-24 00:00 |
07:20:12.88 |
+13:15:15.9 |
HIP 35620 |
15.85 |
| 2026-09-24 12:00 |
07:20:13.82 |
+13:15:11.3 |
HIP 35620 |
15.63 |
| 2026-09-25 00:00 |
07:20:14.73 |
+13:15:06.7 |
HIP 35620 |
15.41 |
| 2026-09-25 12:00 |
07:20:15.62 |
+13:15:02.2 |
HIP 35620 |
15.20 |
| 2026-09-26 00:00 |
07:20:16.47 |
+13:14:57.7 |
HIP 35620 |
15.00 |
| 2026-09-26 12:00 |
07:20:17.30 |
+13:14:53.2 |
HIP 35620 |
14.80 |
| 2026-09-27 00:00 |
07:20:18.09 |
+13:14:48.8 |
HIP 35620 |
14.61 |
| 2026-09-27 12:00 |
07:20:18.86 |
+13:14:44.4 |
HIP 35620 |
14.43 |
| 2026-09-28 00:00 |
07:20:19.60 |
+13:14:40.1 |
HIP 35620 |
14.25 |
| 2026-09-28 12:00 |
07:20:20.31 |
+13:14:35.8 |
HIP 35620 |
14.07 |
| 2026-09-29 00:00 |
07:20:20.99 |
+13:14:31.5 |
HIP 35620 |
13.90 |
| 2026-09-29 12:00 |
07:20:21.65 |
+13:14:27.3 |
HIP 35620 |
13.74 |
| 2026-09-30 00:00 |
07:20:22.27 |
+13:14:23.1 |
HIP 35620 |
13.58 |
| 2026-09-30 12:00 |
07:20:22.87 |
+13:14:19.0 |
HIP 35620 |
13.43 |
| 2026-10-01 00:00 |
07:20:23.43 |
+13:14:14.9 |
HIP 35620 |
13.29 |
| 2026-10-01 12:00 |
07:20:23.97 |
+13:14:10.8 |
HIP 35620 |
13.15 |
| 2026-10-02 00:00 |
07:20:24.48 |
+13:14:06.8 |
HIP 35620 |
13.01 |
| 2026-10-02 12:00 |
07:20:24.96 |
+13:14:02.9 |
HIP 35620 |
12.89 |
| 2026-10-03 00:00 |
07:20:25.41 |
+13:13:58.9 |
HIP 35620 |
12.76 |
| 2026-10-03 12:00 |
07:20:25.83 |
+13:13:55.1 |
HIP 35620 |
12.65 |
| 2026-10-04 00:00 |
07:20:26.22 |
+13:13:51.2 |
HIP 35620 |
12.53 |
| 2026-10-04 12:00 |
07:20:26.58 |
+13:13:47.5 |
HIP 35620 |
12.43 |
| 2026-10-05 00:00 |
07:20:26.91 |
+13:13:43.7 |
HIP 35620 |
12.33 |
| 2026-10-05 12:00 |
07:20:27.21 |
+13:13:40.0 |
HIP 35620 |
12.23 |
| 2026-10-06 00:00 |
07:20:27.48 |
+13:13:36.4 |
HIP 35620 |
12.14 |
| 2026-10-06 12:00 |
07:20:27.72 |
+13:13:32.8 |
HIP 35620 |
12.06 |
| 2026-10-07 00:00 |
07:20:27.93 |
+13:13:29.3 |
HIP 35620 |
11.98 |
| 2026-10-07 12:00 |
07:20:28.11 |
+13:13:25.8 |
HIP 35620 |
11.91 |
| 2026-10-08 00:00 |
07:20:28.26 |
+13:13:22.4 |
HIP 35620 |
11.84 |
| 2026-10-08 12:00 |
07:20:28.37 |
+13:13:19.0 |
HIP 35620 |
11.78 |
| 2026-10-09 00:00 |
07:20:28.46 |
+13:13:15.7 |
HIP 35620 |
11.73 |
| 2026-10-09 12:00 |
07:20:28.52 |
+13:13:12.5 |
HIP 35620 |
11.68 |
| 2026-10-10 00:00 |
07:20:28.55 |
+13:13:09.3 |
HIP 35620 |
11.64 |
| 2026-10-10 12:00 |
07:20:28.55 |
+13:13:06.1 |
HIP 35620 |
11.60 |
| 2026-10-11 00:00 |
07:20:28.51 |
+13:13:03.0 |
HIP 35620 |
11.57 |