메타데이터
| 항목 |
값 |
| Designation |
C/2006 L1 (Garradd) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-10-18T00:03:47.067840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:58Z |
| Obs used |
706 |
| NEO |
- |
| M1 |
8.700 |
| K1 |
21.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2006-12-13.0000000 |
| e |
0.99734388 |
| q (au) |
1.462070 |
| a (au) |
550.453473 |
| i (deg) |
143.242586 |
| Ω (om, deg) |
101.760169 |
| ω (w, deg) |
338.409780 |
| M (ma, deg) |
0.004274 |
밝기
산란 + 전체 선형
$$
M_a = (9.687 + 5.938\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.687 |
| n |
5.938 |
| gf |
1.000 |
| gb |
-0.500 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2006-06-04 |
2006-10-17 |
+8.2549 |
-2.682 |
| 2006-10-19 |
2006-12-20 |
+22.8632 |
-6.327 |
| 2006-12-20 |
2007-03-14 |
-11.8648 |
+2.378 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
21:00:28.64 |
+07:59:17.6 |
HIP 103686 |
13.65 |
| 2026-03-26 12:00 |
21:00:30.34 |
+07:59:38.2 |
HIP 103686 |
13.23 |
| 2026-03-27 00:00 |
21:00:32.02 |
+07:59:58.9 |
HIP 103686 |
12.83 |
| 2026-03-27 12:00 |
21:00:33.68 |
+08:00:19.7 |
HIP 103686 |
12.43 |
| 2026-03-28 00:00 |
21:00:35.32 |
+08:00:40.4 |
HIP 103686 |
12.05 |
| 2026-03-28 12:00 |
21:00:36.94 |
+08:01:01.1 |
HIP 103686 |
11.67 |
| 2026-03-29 00:00 |
21:00:38.54 |
+08:01:21.9 |
HIP 103686 |
11.31 |
| 2026-03-29 12:00 |
21:00:40.12 |
+08:01:42.7 |
HIP 103686 |
10.97 |
| 2026-03-30 00:00 |
21:00:41.68 |
+08:02:03.5 |
HIP 103686 |
10.63 |
| 2026-03-30 12:00 |
21:00:43.22 |
+08:02:24.3 |
HIP 103686 |
10.31 |
| 2026-03-31 00:00 |
21:00:44.73 |
+08:02:45.1 |
HIP 103686 |
10.01 |
| 2026-03-31 12:00 |
21:00:46.23 |
+08:03:05.9 |
HIP 103686 |
9.72 |
| 2026-04-01 00:00 |
21:00:47.71 |
+08:03:26.8 |
HIP 103686 |
9.45 |
| 2026-04-01 12:00 |
21:00:49.17 |
+08:03:47.6 |
HIP 103686 |
9.20 |
| 2026-04-02 00:00 |
21:00:50.60 |
+08:04:08.5 |
HIP 103686 |
8.97 |
| 2026-04-02 12:00 |
21:00:52.02 |
+08:04:29.3 |
HIP 103686 |
8.76 |
| 2026-04-03 00:00 |
21:00:53.41 |
+08:04:50.2 |
HIP 103686 |
8.57 |
| 2026-04-03 12:00 |
21:00:54.78 |
+08:05:11.0 |
HIP 103686 |
8.40 |
| 2026-04-04 00:00 |
21:00:56.13 |
+08:05:31.9 |
HIP 103686 |
8.25 |
| 2026-04-04 12:00 |
21:00:57.46 |
+08:05:52.7 |
HIP 103686 |
8.13 |
| 2026-04-05 00:00 |
21:00:58.77 |
+08:06:13.6 |
HIP 103686 |
8.03 |
| 2026-04-05 12:00 |
21:01:00.06 |
+08:06:34.4 |
HIP 103686 |
7.95 |
| 2026-04-06 00:00 |
21:01:01.32 |
+08:06:55.2 |
HIP 103686 |
7.90 |
| 2026-04-06 12:00 |
21:01:02.56 |
+08:07:16.1 |
HIP 103686 |
7.87 |
| 2026-04-07 00:00 |
21:01:03.78 |
+08:07:36.9 |
HIP 103686 |
7.87 |
| 2026-04-07 12:00 |
21:01:04.98 |
+08:07:57.7 |
HIP 103686 |
7.89 |
| 2026-04-08 00:00 |
21:01:06.16 |
+08:08:18.5 |
HIP 103686 |
7.92 |
| 2026-04-08 12:00 |
21:01:07.31 |
+08:08:39.2 |
HIP 103686 |
7.98 |
| 2026-04-09 00:00 |
21:01:08.44 |
+08:09:00.0 |
HIP 103686 |
8.06 |
| 2026-04-09 12:00 |
21:01:09.55 |
+08:09:20.7 |
HIP 103686 |
8.16 |
| 2026-04-10 00:00 |
21:01:10.64 |
+08:09:41.5 |
HIP 103686 |
8.28 |
| 2026-04-10 12:00 |
21:01:11.70 |
+08:10:02.2 |
HIP 103686 |
8.41 |
| 2026-04-11 00:00 |
21:01:12.75 |
+08:10:22.8 |
HIP 103686 |
8.56 |
| 2026-04-11 12:00 |
21:01:13.76 |
+08:10:43.5 |
HIP 103686 |
8.72 |
| 2026-04-12 00:00 |
21:01:14.76 |
+08:11:04.1 |
HIP 103686 |
8.89 |
| 2026-04-12 12:00 |
21:01:15.73 |
+08:11:24.7 |
HIP 103686 |
9.07 |
| 2026-04-13 00:00 |
21:01:16.68 |
+08:11:45.3 |
HIP 103686 |
9.26 |
| 2026-04-13 12:00 |
21:01:17.61 |
+08:12:05.8 |
HIP 103686 |
9.46 |
| 2026-04-14 00:00 |
21:01:18.51 |
+08:12:26.3 |
HIP 103686 |
9.67 |
| 2026-04-14 12:00 |
21:01:19.39 |
+08:12:46.8 |
HIP 103686 |
9.89 |
| 2026-04-15 00:00 |
21:01:20.25 |
+08:13:07.3 |
HIP 103686 |
10.11 |
| 2026-04-15 12:00 |
21:01:21.08 |
+08:13:27.7 |
HIP 103686 |
10.33 |
| 2026-04-16 00:00 |
21:01:21.89 |
+08:13:48.0 |
HIP 103686 |
10.56 |