메타데이터
| 항목 |
값 |
| Designation |
C/2008 Q1 (Maticic) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-12-30T03:12:23.523840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:22Z |
| Obs used |
1021 |
| NEO |
- |
| M1 |
12.800 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2009-01-09.0000000 |
| e |
0.99501685 |
| q (au) |
2.959144 |
| a (au) |
593.829979 |
| i (deg) |
118.626625 |
| Ω (om, deg) |
9.307702 |
| ω (w, deg) |
104.480851 |
| M (ma, deg) |
0.000672 |
밝기
산란 + 전체 선형
$$
M_a = (12.548 + 4.150\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.548 |
| n |
4.150 |
| gf |
1.000 |
| gb |
-0.820 |
| k |
0.800 |
| 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 |
| 2009-01-12 |
2009-08-14 |
-13.1930 |
+6.500 |
| 2009-08-14 |
2010-04-10 |
+9.2086 |
-6.432 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
08:04:28.65 |
-36:41:13.0 |
HIP 39481 |
16.96 |
| 2026-09-20 12:00 |
08:04:30.44 |
-36:41:52.2 |
HIP 39481 |
17.68 |
| 2026-09-21 00:00 |
08:04:32.19 |
-36:42:31.5 |
HIP 39481 |
18.40 |
| 2026-09-21 12:00 |
08:04:33.91 |
-36:43:11.0 |
HIP 39481 |
19.13 |
| 2026-09-22 00:00 |
08:04:35.61 |
-36:43:50.6 |
HIP 39481 |
19.86 |
| 2026-09-22 12:00 |
08:04:37.27 |
-36:44:30.4 |
HIP 39481 |
20.59 |
| 2026-09-23 00:00 |
08:04:38.91 |
-36:45:10.3 |
HIP 39481 |
21.32 |
| 2026-09-23 12:00 |
08:04:40.52 |
-36:45:50.4 |
HIP 39481 |
22.05 |
| 2026-09-24 00:00 |
08:04:42.09 |
-36:46:30.6 |
HIP 39481 |
22.78 |
| 2026-09-24 12:00 |
08:04:43.64 |
-36:47:10.9 |
HIP 39376 |
23.40 |
| 2026-09-25 00:00 |
08:04:45.16 |
-36:47:51.3 |
HIP 39376 |
24.00 |
| 2026-09-25 12:00 |
08:04:46.65 |
-36:48:31.9 |
HIP 39376 |
24.60 |
| 2026-09-26 00:00 |
08:04:48.10 |
-36:49:12.6 |
HIP 39376 |
25.20 |
| 2026-09-26 12:00 |
08:04:49.53 |
-36:49:53.4 |
HIP 39415 |
24.87 |
| 2026-09-27 00:00 |
08:04:50.93 |
-36:50:34.3 |
HIP 39415 |
24.55 |
| 2026-09-27 12:00 |
08:04:52.29 |
-36:51:15.3 |
HIP 39415 |
24.25 |
| 2026-09-28 00:00 |
08:04:53.63 |
-36:51:56.4 |
HIP 39415 |
23.96 |
| 2026-09-28 12:00 |
08:04:54.93 |
-36:52:37.7 |
HIP 39415 |
23.68 |
| 2026-09-29 00:00 |
08:04:56.21 |
-36:53:19.0 |
HIP 39415 |
23.41 |
| 2026-09-29 12:00 |
08:04:57.45 |
-36:54:00.5 |
HIP 39415 |
23.16 |
| 2026-09-30 00:00 |
08:04:58.66 |
-36:54:42.1 |
HIP 39415 |
22.92 |
| 2026-09-30 12:00 |
08:04:59.84 |
-36:55:23.7 |
HIP 39415 |
22.70 |
| 2026-10-01 00:00 |
08:05:00.99 |
-36:56:05.5 |
HIP 39415 |
22.50 |
| 2026-10-01 12:00 |
08:05:02.10 |
-36:56:47.3 |
HIP 39415 |
22.31 |
| 2026-10-02 00:00 |
08:05:03.19 |
-36:57:29.3 |
HIP 39415 |
22.13 |
| 2026-10-02 12:00 |
08:05:04.24 |
-36:58:11.3 |
HIP 39415 |
21.98 |
| 2026-10-03 00:00 |
08:05:05.26 |
-36:58:53.4 |
HIP 39415 |
21.84 |
| 2026-10-03 12:00 |
08:05:06.25 |
-36:59:35.6 |
HIP 39415 |
21.71 |
| 2026-10-04 00:00 |
08:05:07.20 |
-37:00:17.9 |
HIP 39415 |
21.61 |
| 2026-10-04 12:00 |
08:05:08.12 |
-37:01:00.2 |
HIP 39415 |
21.52 |
| 2026-10-05 00:00 |
08:05:09.01 |
-37:01:42.7 |
HIP 39415 |
21.45 |
| 2026-10-05 12:00 |
08:05:09.87 |
-37:02:25.2 |
HIP 39415 |
21.40 |
| 2026-10-06 00:00 |
08:05:10.69 |
-37:03:07.7 |
HIP 39415 |
21.36 |
| 2026-10-06 12:00 |
08:05:11.48 |
-37:03:50.4 |
HIP 39415 |
21.35 |
| 2026-10-07 00:00 |
08:05:12.24 |
-37:04:33.1 |
HIP 39415 |
21.35 |
| 2026-10-07 12:00 |
08:05:12.96 |
-37:05:15.8 |
HIP 39415 |
21.37 |
| 2026-10-08 00:00 |
08:05:13.65 |
-37:05:58.6 |
HIP 39415 |
21.41 |
| 2026-10-08 12:00 |
08:05:14.31 |
-37:06:41.5 |
HIP 39415 |
21.46 |
| 2026-10-09 00:00 |
08:05:14.93 |
-37:07:24.4 |
HIP 39415 |
21.54 |
| 2026-10-09 12:00 |
08:05:15.52 |
-37:08:07.4 |
HIP 39415 |
21.63 |
| 2026-10-10 00:00 |
08:05:16.07 |
-37:08:50.4 |
HIP 39415 |
21.73 |
| 2026-10-10 12:00 |
08:05:16.59 |
-37:09:33.4 |
HIP 39415 |
21.86 |
| 2026-10-11 00:00 |
08:05:17.08 |
-37:10:16.5 |
HIP 39415 |
22.00 |