메타데이터
| 항목 |
값 |
| Designation |
C/2008 J5 (Garradd) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-04-01T01:47:02.302080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:19Z |
| Obs used |
128 |
| NEO |
- |
| M1 |
10.600 |
| K1 |
17.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-06-25.0000000 |
| e |
0.97288948 |
| q (au) |
1.963842 |
| a (au) |
72.438378 |
| i (deg) |
93.270724 |
| Ω (om, deg) |
287.075696 |
| ω (w, deg) |
313.376402 |
| M (ma, deg) |
0.135766 |
밝기
산란 + 전체 선형
$$
M_a = (10.954 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.954 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.798 |
| k |
0.998 |
| 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) |
| 2026-06-01 00:00 |
13:50:28.43 |
+81:00:48.6 |
HIP 67592 |
14.79 |
| 2026-06-01 12:00 |
13:50:12.09 |
+81:00:16.2 |
HIP 67592 |
14.32 |
| 2026-06-02 00:00 |
13:49:55.89 |
+80:59:43.4 |
HIP 67592 |
13.89 |
| 2026-06-02 12:00 |
13:49:39.84 |
+80:59:10.3 |
HIP 67592 |
13.48 |
| 2026-06-03 00:00 |
13:49:23.94 |
+80:58:36.9 |
HIP 67592 |
13.11 |
| 2026-06-03 12:00 |
13:49:08.18 |
+80:58:03.1 |
HIP 67592 |
12.78 |
| 2026-06-04 00:00 |
13:48:52.58 |
+80:57:29.0 |
HIP 67592 |
12.49 |
| 2026-06-04 12:00 |
13:48:37.13 |
+80:56:54.5 |
HIP 67592 |
12.24 |
| 2026-06-05 00:00 |
13:48:21.83 |
+80:56:19.7 |
HIP 67592 |
12.04 |
| 2026-06-05 12:00 |
13:48:06.68 |
+80:55:44.6 |
HIP 67592 |
11.88 |
| 2026-06-06 00:00 |
13:47:51.69 |
+80:55:09.2 |
HIP 67592 |
11.78 |
| 2026-06-06 12:00 |
13:47:36.85 |
+80:54:33.4 |
HIP 67592 |
11.73 |
| 2026-06-07 00:00 |
13:47:22.16 |
+80:53:57.3 |
HIP 67592 |
11.73 |
| 2026-06-07 12:00 |
13:47:07.64 |
+80:53:20.9 |
HIP 67592 |
11.79 |
| 2026-06-08 00:00 |
13:46:53.27 |
+80:52:44.2 |
HIP 67592 |
11.89 |
| 2026-06-08 12:00 |
13:46:39.05 |
+80:52:07.2 |
HIP 67592 |
12.05 |
| 2026-06-09 00:00 |
13:46:25.00 |
+80:51:29.9 |
HIP 67592 |
12.26 |
| 2026-06-09 12:00 |
13:46:11.10 |
+80:50:52.2 |
HIP 67592 |
12.51 |
| 2026-06-10 00:00 |
13:45:57.37 |
+80:50:14.3 |
HIP 67592 |
12.80 |
| 2026-06-10 12:00 |
13:45:43.79 |
+80:49:36.1 |
HIP 67592 |
13.14 |
| 2026-06-11 00:00 |
13:45:30.38 |
+80:48:57.6 |
HIP 67592 |
13.51 |
| 2026-06-11 12:00 |
13:45:17.13 |
+80:48:18.8 |
HIP 67592 |
13.92 |
| 2026-06-12 00:00 |
13:45:04.04 |
+80:47:39.8 |
HIP 67592 |
14.36 |
| 2026-06-12 12:00 |
13:44:51.12 |
+80:47:00.4 |
HIP 67592 |
14.83 |
| 2026-06-13 00:00 |
13:44:38.36 |
+80:46:20.8 |
HIP 67592 |
15.32 |
| 2026-06-13 12:00 |
13:44:25.76 |
+80:45:40.9 |
HIP 67592 |
15.84 |
| 2026-06-14 00:00 |
13:44:13.33 |
+80:45:00.7 |
HIP 67592 |
16.38 |
| 2026-06-14 12:00 |
13:44:01.06 |
+80:44:20.3 |
HIP 67592 |
16.93 |
| 2026-06-15 00:00 |
13:43:48.96 |
+80:43:39.7 |
HIP 67592 |
17.51 |
| 2026-06-15 12:00 |
13:43:37.03 |
+80:42:58.7 |
HIP 67592 |
18.10 |
| 2026-06-16 00:00 |
13:43:25.27 |
+80:42:17.5 |
HIP 67592 |
18.70 |
| 2026-06-16 12:00 |
13:43:13.67 |
+80:41:36.1 |
HIP 67592 |
19.32 |
| 2026-06-17 00:00 |
13:43:02.24 |
+80:40:54.5 |
HIP 67592 |
19.95 |
| 2026-06-17 12:00 |
13:42:50.97 |
+80:40:12.6 |
HIP 67592 |
20.59 |
| 2026-06-18 00:00 |
13:42:39.88 |
+80:39:30.4 |
HIP 67592 |
21.23 |
| 2026-06-18 12:00 |
13:42:28.95 |
+80:38:48.1 |
HIP 67592 |
21.89 |
| 2026-06-19 00:00 |
13:42:18.20 |
+80:38:05.5 |
HIP 67592 |
22.55 |
| 2026-06-19 12:00 |
13:42:07.61 |
+80:37:22.7 |
HIP 67592 |
23.22 |
| 2026-06-20 00:00 |
13:41:57.19 |
+80:36:39.6 |
HIP 67592 |
23.90 |
| 2026-06-20 12:00 |
13:41:46.94 |
+80:35:56.4 |
HIP 66809 |
23.72 |
| 2026-06-21 00:00 |
13:41:36.85 |
+80:35:13.0 |
HIP 66809 |
22.99 |
| 2026-06-21 12:00 |
13:41:26.94 |
+80:34:29.3 |
HIP 66809 |
22.27 |
| 2026-06-22 00:00 |
13:41:17.20 |
+80:33:45.5 |
HIP 66809 |
21.56 |