메타데이터
| 항목 |
값 |
| Designation |
319P/Catalina-McNaught |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-07-01T22:02:55.170240Z |
| Orbit solution date (soln_date, UTC) |
2025-04-24T09:42:33Z |
| Obs used |
371 |
| NEO |
Yes |
| M1 |
17.100 |
| K1 |
8.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-10-04.0000000 |
| e |
0.66499524 |
| q (au) |
1.196987 |
| a (au) |
3.573045 |
| i (deg) |
15.074177 |
| Ω (om, deg) |
111.366470 |
| ω (w, deg) |
203.679689 |
| M (ma, deg) |
267.200002 |
밝기
산란 + 전체 선형
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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 |
09:20:20.56 |
+24:28:32.6 |
HIP 45756 |
7.91 |
| 2026-05-12 12:00 |
09:20:26.70 |
+24:27:37.4 |
HIP 45756 |
8.86 |
| 2026-05-13 00:00 |
09:20:33.00 |
+24:26:41.5 |
HIP 45756 |
10.04 |
| 2026-05-13 12:00 |
09:20:39.46 |
+24:25:44.9 |
HIP 45756 |
11.40 |
| 2026-05-14 00:00 |
09:20:46.09 |
+24:24:47.8 |
HIP 45756 |
12.88 |
| 2026-05-14 12:00 |
09:20:52.87 |
+24:23:50.0 |
HIP 45756 |
14.47 |
| 2026-05-15 00:00 |
09:20:59.82 |
+24:22:51.6 |
HIP 45756 |
16.15 |
| 2026-05-15 12:00 |
09:21:06.93 |
+24:21:52.6 |
HIP 45756 |
17.90 |
| 2026-05-16 00:00 |
09:21:14.19 |
+24:20:53.0 |
HIP 45756 |
19.72 |
| 2026-05-16 12:00 |
09:21:21.62 |
+24:19:52.8 |
HIP 45756 |
21.59 |
| 2026-05-17 00:00 |
09:21:29.20 |
+24:18:52.0 |
HIP 45756 |
23.52 |
| 2026-05-17 12:00 |
09:21:36.94 |
+24:17:50.6 |
HIP 45756 |
25.49 |
| 2026-05-18 00:00 |
09:21:44.83 |
+24:16:48.7 |
HIP 46062 |
24.99 |
| 2026-05-18 12:00 |
09:21:52.88 |
+24:15:46.1 |
HIP 46062 |
23.29 |
| 2026-05-19 00:00 |
09:22:01.08 |
+24:14:43.0 |
HIP 46062 |
21.64 |
| 2026-05-19 12:00 |
09:22:09.44 |
+24:13:39.2 |
HIP 46062 |
20.04 |
| 2026-05-20 00:00 |
09:22:17.94 |
+24:12:35.0 |
HIP 46062 |
18.53 |
| 2026-05-20 12:00 |
09:22:26.60 |
+24:11:30.1 |
HIP 46062 |
17.15 |
| 2026-05-21 00:00 |
09:22:35.41 |
+24:10:24.7 |
HIP 46062 |
15.95 |
| 2026-05-21 12:00 |
09:22:44.36 |
+24:09:18.8 |
HIP 46062 |
14.97 |
| 2026-05-22 00:00 |
09:22:53.47 |
+24:08:12.3 |
HIP 46062 |
14.30 |
| 2026-05-22 12:00 |
09:23:02.72 |
+24:07:05.2 |
HIP 46062 |
13.98 |
| 2026-05-23 00:00 |
09:23:12.11 |
+24:05:57.7 |
HIP 46062 |
14.07 |
| 2026-05-23 12:00 |
09:23:21.65 |
+24:04:49.6 |
HIP 46062 |
14.56 |
| 2026-05-24 00:00 |
09:23:31.34 |
+24:03:40.9 |
HIP 46062 |
15.44 |
| 2026-05-24 12:00 |
09:23:41.16 |
+24:02:31.8 |
HIP 46062 |
16.66 |
| 2026-05-25 00:00 |
09:23:51.13 |
+24:01:22.1 |
HIP 46062 |
18.16 |
| 2026-05-25 12:00 |
09:24:01.24 |
+24:00:11.9 |
HIP 46062 |
19.90 |
| 2026-05-26 00:00 |
09:24:11.49 |
+23:59:01.2 |
HIP 46062 |
21.83 |
| 2026-05-26 12:00 |
09:24:21.88 |
+23:57:50.0 |
HIP 46119 |
23.09 |
| 2026-05-27 00:00 |
09:24:32.40 |
+23:56:38.3 |
HIP 46119 |
22.11 |
| 2026-05-27 12:00 |
09:24:43.07 |
+23:55:26.2 |
HIP 46119 |
21.42 |
| 2026-05-28 00:00 |
09:24:53.87 |
+23:54:13.5 |
HIP 46119 |
21.07 |
| 2026-05-28 12:00 |
09:25:04.80 |
+23:53:00.3 |
HIP 46119 |
21.09 |
| 2026-05-29 00:00 |
09:25:15.87 |
+23:51:46.6 |
HIP 46119 |
21.48 |
| 2026-05-29 12:00 |
09:25:27.07 |
+23:50:32.5 |
HIP 46119 |
22.24 |
| 2026-05-30 00:00 |
09:25:38.40 |
+23:49:17.9 |
HIP 46119 |
23.34 |
| 2026-05-30 12:00 |
09:25:49.86 |
+23:48:02.8 |
HIP 46119 |
24.76 |
| 2026-05-31 00:00 |
09:26:01.46 |
+23:46:47.2 |
HIP 46119 |
26.44 |
| 2026-05-31 12:00 |
09:26:13.18 |
+23:45:31.2 |
HIP 46119 |
28.35 |
| 2026-06-01 00:00 |
09:26:25.04 |
+23:44:14.7 |
HIP 46119 |
30.46 |
| 2026-06-01 12:00 |
09:26:37.02 |
+23:42:57.7 |
HIP 46427 |
32.52 |
| 2026-06-02 00:00 |
09:26:49.13 |
+23:41:40.3 |
HIP 46427 |
29.84 |