메타데이터
| 항목 |
값 |
| Designation |
C/2004 DZ61 (Catalina-LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2004-05-26T20:35:08.787840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:38Z |
| Obs used |
344 |
| NEO |
- |
| M1 |
15.700 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2004-03-21.0000000 |
| e |
0.95602635 |
| q (au) |
2.013330 |
| a (au) |
45.784923 |
| i (deg) |
66.809283 |
| Ω (om, deg) |
172.791834 |
| ω (w, deg) |
44.462016 |
| M (ma, deg) |
359.787298 |
밝기
산란 + 전체 선형
$$
M_a = (13.877 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.877 |
| n |
2.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
00:52:23.30 |
-18:45:52.5 |
HIP 4117 |
12.47 |
| 2026-07-29 12:00 |
00:52:22.29 |
-18:46:18.1 |
HIP 4117 |
12.96 |
| 2026-07-30 00:00 |
00:52:21.26 |
-18:46:43.9 |
HIP 4117 |
13.45 |
| 2026-07-30 12:00 |
00:52:20.20 |
-18:47:09.7 |
HIP 4117 |
13.95 |
| 2026-07-31 00:00 |
00:52:19.11 |
-18:47:35.6 |
HIP 4117 |
14.45 |
| 2026-07-31 12:00 |
00:52:18.01 |
-18:48:01.6 |
HIP 4117 |
14.95 |
| 2026-08-01 00:00 |
00:52:16.87 |
-18:48:27.6 |
HIP 4117 |
15.46 |
| 2026-08-01 12:00 |
00:52:15.72 |
-18:48:53.7 |
HIP 4117 |
15.97 |
| 2026-08-02 00:00 |
00:52:14.54 |
-18:49:19.9 |
HIP 4117 |
16.49 |
| 2026-08-02 12:00 |
00:52:13.34 |
-18:49:46.1 |
HIP 4117 |
17.01 |
| 2026-08-03 00:00 |
00:52:12.11 |
-18:50:12.4 |
HIP 4117 |
17.53 |
| 2026-08-03 12:00 |
00:52:10.86 |
-18:50:38.8 |
HIP 4117 |
18.05 |
| 2026-08-04 00:00 |
00:52:09.59 |
-18:51:05.2 |
HIP 4117 |
18.58 |
| 2026-08-04 12:00 |
00:52:08.29 |
-18:51:31.7 |
HIP 4117 |
19.12 |
| 2026-08-05 00:00 |
00:52:06.97 |
-18:51:58.2 |
HIP 4117 |
19.65 |
| 2026-08-05 12:00 |
00:52:05.63 |
-18:52:24.8 |
HIP 4117 |
20.19 |
| 2026-08-06 00:00 |
00:52:04.26 |
-18:52:51.4 |
HIP 4117 |
20.74 |
| 2026-08-06 12:00 |
00:52:02.87 |
-18:53:18.1 |
HIP 4117 |
21.29 |
| 2026-08-07 00:00 |
00:52:01.46 |
-18:53:44.8 |
HIP 4117 |
21.84 |
| 2026-08-07 12:00 |
00:52:00.02 |
-18:54:11.6 |
HIP 4117 |
22.39 |
| 2026-08-08 00:00 |
00:51:58.57 |
-18:54:38.4 |
HIP 4117 |
22.95 |
| 2026-08-08 12:00 |
00:51:57.09 |
-18:55:05.3 |
HIP 4117 |
23.51 |
| 2026-08-09 00:00 |
00:51:55.58 |
-18:55:32.2 |
HIP 4117 |
24.08 |
| 2026-08-09 12:00 |
00:51:54.06 |
-18:55:59.2 |
HIP 4117 |
24.65 |
| 2026-08-10 00:00 |
00:51:52.51 |
-18:56:26.1 |
HIP 4117 |
25.22 |
| 2026-08-10 12:00 |
00:51:50.94 |
-18:56:53.2 |
HIP 4117 |
25.79 |
| 2026-08-11 00:00 |
00:51:49.34 |
-18:57:20.2 |
HIP 4117 |
26.37 |
| 2026-08-11 12:00 |
00:51:47.73 |
-18:57:47.3 |
HIP 4117 |
26.96 |
| 2026-08-12 00:00 |
00:51:46.09 |
-18:58:14.4 |
HIP 4063 |
27.43 |
| 2026-08-12 12:00 |
00:51:44.43 |
-18:58:41.5 |
HIP 4063 |
27.05 |
| 2026-08-13 00:00 |
00:51:42.75 |
-18:59:08.7 |
HIP 4063 |
26.67 |
| 2026-08-13 12:00 |
00:51:41.04 |
-18:59:35.9 |
HIP 4063 |
26.30 |
| 2026-08-14 00:00 |
00:51:39.32 |
-19:00:03.1 |
HIP 4063 |
25.95 |
| 2026-08-14 12:00 |
00:51:37.57 |
-19:00:30.3 |
HIP 4063 |
25.60 |
| 2026-08-15 00:00 |
00:51:35.81 |
-19:00:57.5 |
HIP 4063 |
25.26 |
| 2026-08-15 12:00 |
00:51:34.02 |
-19:01:24.8 |
HIP 4063 |
24.94 |
| 2026-08-16 00:00 |
00:51:32.21 |
-19:01:52.0 |
HIP 4063 |
24.62 |
| 2026-08-16 12:00 |
00:51:30.38 |
-19:02:19.3 |
HIP 4063 |
24.32 |
| 2026-08-17 00:00 |
00:51:28.53 |
-19:02:46.5 |
HIP 4063 |
24.04 |
| 2026-08-17 12:00 |
00:51:26.66 |
-19:03:13.8 |
HIP 4063 |
23.77 |
| 2026-08-18 00:00 |
00:51:24.77 |
-19:03:41.1 |
HIP 4063 |
23.51 |
| 2026-08-18 12:00 |
00:51:22.85 |
-19:04:08.4 |
HIP 4063 |
23.28 |
| 2026-08-19 00:00 |
00:51:20.92 |
-19:04:35.7 |
HIP 4063 |
23.06 |