메타데이터
| 항목 |
값 |
| Designation |
C/2007 Q1 (Garradd) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-12-11T05:36:50.662080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:11Z |
| Obs used |
45 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
16.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2007-09-02.0000000 |
| e |
1.00098762 |
| q (au) |
2.989255 |
| a (au) |
-3026.729908 |
| i (deg) |
82.007598 |
| Ω (om, deg) |
5.894732 |
| ω (w, deg) |
282.133141 |
| M (ma, deg) |
0.001567 |
밝기
산란 + 전체 선형
$$
M_a = (7.386 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.386 |
| 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) |
| 2026-05-12 00:00 |
22:02:29.46 |
+66:25:26.3 |
HIP 109036 |
19.01 |
| 2026-05-12 12:00 |
22:02:30.12 |
+66:26:13.7 |
HIP 109036 |
19.31 |
| 2026-05-13 00:00 |
22:02:30.72 |
+66:27:01.2 |
HIP 109036 |
19.65 |
| 2026-05-13 12:00 |
22:02:31.25 |
+66:27:48.7 |
HIP 109036 |
20.02 |
| 2026-05-14 00:00 |
22:02:31.73 |
+66:28:36.2 |
HIP 109036 |
20.41 |
| 2026-05-14 12:00 |
22:02:32.14 |
+66:29:23.8 |
HIP 109036 |
20.84 |
| 2026-05-15 00:00 |
22:02:32.49 |
+66:30:11.3 |
HIP 109036 |
21.29 |
| 2026-05-15 12:00 |
22:02:32.78 |
+66:30:58.8 |
HIP 109036 |
21.76 |
| 2026-05-16 00:00 |
22:02:33.01 |
+66:31:46.4 |
HIP 109028 |
21.70 |
| 2026-05-16 12:00 |
22:02:33.18 |
+66:32:33.9 |
HIP 109028 |
21.16 |
| 2026-05-17 00:00 |
22:02:33.29 |
+66:33:21.5 |
HIP 109028 |
20.63 |
| 2026-05-17 12:00 |
22:02:33.34 |
+66:34:09.0 |
HIP 109028 |
20.13 |
| 2026-05-18 00:00 |
22:02:33.32 |
+66:34:56.5 |
HIP 109028 |
19.65 |
| 2026-05-18 12:00 |
22:02:33.24 |
+66:35:44.0 |
HIP 109028 |
19.20 |
| 2026-05-19 00:00 |
22:02:33.10 |
+66:36:31.4 |
HIP 109028 |
18.77 |
| 2026-05-19 12:00 |
22:02:32.90 |
+66:37:18.9 |
HIP 109028 |
18.38 |
| 2026-05-20 00:00 |
22:02:32.63 |
+66:38:06.3 |
HIP 109028 |
18.01 |
| 2026-05-20 12:00 |
22:02:32.31 |
+66:38:53.7 |
HIP 109028 |
17.68 |
| 2026-05-21 00:00 |
22:02:31.92 |
+66:39:41.1 |
HIP 109028 |
17.39 |
| 2026-05-21 12:00 |
22:02:31.47 |
+66:40:28.4 |
HIP 109028 |
17.13 |
| 2026-05-22 00:00 |
22:02:30.96 |
+66:41:15.7 |
HIP 109028 |
16.92 |
| 2026-05-22 12:00 |
22:02:30.38 |
+66:42:02.9 |
HIP 109028 |
16.74 |
| 2026-05-23 00:00 |
22:02:29.74 |
+66:42:50.1 |
HIP 109028 |
16.60 |
| 2026-05-23 12:00 |
22:02:29.04 |
+66:43:37.2 |
HIP 109028 |
16.51 |
| 2026-05-24 00:00 |
22:02:28.28 |
+66:44:24.3 |
HIP 109028 |
16.46 |
| 2026-05-24 12:00 |
22:02:27.46 |
+66:45:11.3 |
HIP 109028 |
16.46 |
| 2026-05-25 00:00 |
22:02:26.57 |
+66:45:58.3 |
HIP 109028 |
16.50 |
| 2026-05-25 12:00 |
22:02:25.62 |
+66:46:45.2 |
HIP 109028 |
16.58 |
| 2026-05-26 00:00 |
22:02:24.61 |
+66:47:32.1 |
HIP 109028 |
16.70 |
| 2026-05-26 12:00 |
22:02:23.54 |
+66:48:18.8 |
HIP 109028 |
16.87 |
| 2026-05-27 00:00 |
22:02:22.40 |
+66:49:05.6 |
HIP 109028 |
17.08 |
| 2026-05-27 12:00 |
22:02:21.20 |
+66:49:52.2 |
HIP 109028 |
17.32 |
| 2026-05-28 00:00 |
22:02:19.94 |
+66:50:38.7 |
HIP 108894 |
17.16 |
| 2026-05-28 12:00 |
22:02:18.62 |
+66:51:25.2 |
HIP 108894 |
16.51 |
| 2026-05-29 00:00 |
22:02:17.23 |
+66:52:11.6 |
HIP 108894 |
15.87 |
| 2026-05-29 12:00 |
22:02:15.78 |
+66:52:57.9 |
HIP 108894 |
15.24 |
| 2026-05-30 00:00 |
22:02:14.27 |
+66:53:44.2 |
HIP 108894 |
14.64 |
| 2026-05-30 12:00 |
22:02:12.70 |
+66:54:30.3 |
HIP 108894 |
14.06 |
| 2026-05-31 00:00 |
22:02:11.06 |
+66:55:16.3 |
HIP 108894 |
13.50 |
| 2026-05-31 12:00 |
22:02:09.37 |
+66:56:02.3 |
HIP 108894 |
12.98 |
| 2026-06-01 00:00 |
22:02:07.61 |
+66:56:48.1 |
HIP 108894 |
12.48 |
| 2026-06-01 12:00 |
22:02:05.78 |
+66:57:33.8 |
HIP 108894 |
12.02 |
| 2026-06-02 00:00 |
22:02:03.90 |
+66:58:19.5 |
HIP 108894 |
11.60 |