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) |
| 2026-06-01 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 |
| 2026-06-02 12:00 |
22:02:01.95 |
+66:59:05.0 |
HIP 108894 |
11.23 |
| 2026-06-03 00:00 |
22:01:59.94 |
+66:59:50.4 |
HIP 108894 |
10.90 |
| 2026-06-03 12:00 |
22:01:57.87 |
+67:00:35.7 |
HIP 108894 |
10.63 |
| 2026-06-04 00:00 |
22:01:55.74 |
+67:01:20.9 |
HIP 108894 |
10.42 |
| 2026-06-04 12:00 |
22:01:53.54 |
+67:02:05.9 |
HIP 108894 |
10.27 |
| 2026-06-05 00:00 |
22:01:51.28 |
+67:02:50.8 |
HIP 108894 |
10.18 |
| 2026-06-05 12:00 |
22:01:48.96 |
+67:03:35.7 |
HIP 108894 |
10.15 |
| 2026-06-06 00:00 |
22:01:46.58 |
+67:04:20.3 |
HIP 108894 |
10.20 |
| 2026-06-06 12:00 |
22:01:44.13 |
+67:05:04.9 |
HIP 108894 |
10.31 |
| 2026-06-07 00:00 |
22:01:41.62 |
+67:05:49.3 |
HIP 108894 |
10.48 |
| 2026-06-07 12:00 |
22:01:39.05 |
+67:06:33.5 |
HIP 108894 |
10.71 |
| 2026-06-08 00:00 |
22:01:36.42 |
+67:07:17.7 |
HIP 108894 |
10.99 |
| 2026-06-08 12:00 |
22:01:33.73 |
+67:08:01.7 |
HIP 108828 |
10.73 |
| 2026-06-09 00:00 |
22:01:30.97 |
+67:08:45.5 |
HIP 108828 |
10.40 |
| 2026-06-09 12:00 |
22:01:28.15 |
+67:09:29.2 |
HIP 108828 |
10.12 |
| 2026-06-10 00:00 |
22:01:25.27 |
+67:10:12.7 |
HIP 108828 |
9.91 |
| 2026-06-10 12:00 |
22:01:22.33 |
+67:10:56.1 |
HIP 108828 |
9.76 |
| 2026-06-11 00:00 |
22:01:19.33 |
+67:11:39.3 |
HIP 108828 |
9.68 |
| 2026-06-11 12:00 |
22:01:16.27 |
+67:12:22.3 |
HIP 108828 |
9.66 |
| 2026-06-12 00:00 |
22:01:13.14 |
+67:13:05.2 |
HIP 108828 |
9.72 |
| 2026-06-12 12:00 |
22:01:09.95 |
+67:13:47.9 |
HIP 108828 |
9.84 |
| 2026-06-13 00:00 |
22:01:06.70 |
+67:14:30.4 |
HIP 108828 |
10.02 |
| 2026-06-13 12:00 |
22:01:03.39 |
+67:15:12.8 |
HIP 108828 |
10.27 |
| 2026-06-14 00:00 |
22:01:00.02 |
+67:15:54.9 |
HIP 108828 |
10.57 |
| 2026-06-14 12:00 |
22:00:56.59 |
+67:16:36.9 |
HIP 108828 |
10.93 |
| 2026-06-15 00:00 |
22:00:53.10 |
+67:17:18.7 |
HIP 108828 |
11.33 |
| 2026-06-15 12:00 |
22:00:49.54 |
+67:18:00.3 |
HIP 108828 |
11.77 |
| 2026-06-16 00:00 |
22:00:45.93 |
+67:18:41.8 |
HIP 108828 |
12.26 |
| 2026-06-16 12:00 |
22:00:42.26 |
+67:19:23.0 |
HIP 108828 |
12.77 |
| 2026-06-17 00:00 |
22:00:38.52 |
+67:20:04.0 |
HIP 108828 |
13.31 |
| 2026-06-17 12:00 |
22:00:34.73 |
+67:20:44.8 |
HIP 108828 |
13.88 |
| 2026-06-18 00:00 |
22:00:30.88 |
+67:21:25.4 |
HIP 108828 |
14.48 |
| 2026-06-18 12:00 |
22:00:26.96 |
+67:22:05.8 |
HIP 108828 |
15.09 |
| 2026-06-19 00:00 |
22:00:22.99 |
+67:22:46.0 |
HIP 108828 |
15.72 |
| 2026-06-19 12:00 |
22:00:18.96 |
+67:23:26.0 |
HIP 108828 |
16.36 |
| 2026-06-20 00:00 |
22:00:14.87 |
+67:24:05.7 |
HIP 108828 |
17.02 |
| 2026-06-20 12:00 |
22:00:10.73 |
+67:24:45.3 |
HIP 108828 |
17.69 |
| 2026-06-21 00:00 |
22:00:06.52 |
+67:25:24.6 |
HIP 108387 |
18.01 |
| 2026-06-21 12:00 |
22:00:02.26 |
+67:26:03.7 |
HIP 108387 |
17.30 |
| 2026-06-22 00:00 |
21:59:57.94 |
+67:26:42.5 |
HIP 108387 |
16.60 |