메타데이터
| 항목 |
값 |
| Designation |
260P/McNaught |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2012-09-12T12:27:32.633280Z |
| Orbit solution date (soln_date, UTC) |
2026-05-28T12:12:26Z |
| Obs used |
6752 |
| NEO |
- |
| M1 |
12.700 |
| K1 |
13.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-11-24.0000000 |
| e |
0.59437589 |
| q (au) |
1.490799 |
| a (au) |
3.675321 |
| i (deg) |
15.772088 |
| Ω (om, deg) |
351.861236 |
| ω (w, deg) |
15.563634 |
| M (ma, deg) |
112.252457 |
밝기
산란 + 전체 선형
$$
M_a = (11.472 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.472 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.591 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
00:13:34.91 |
-05:27:22.4 |
HIP 1062 |
14.04 |
| 2026-06-01 12:00 |
00:14:52.75 |
-05:15:10.7 |
HIP 1062 |
25.05 |
| 2026-06-02 00:00 |
00:16:10.66 |
-05:02:56.6 |
HIP 1324 |
8.08 |
| 2026-06-02 12:00 |
00:17:28.62 |
-04:50:40.1 |
HIP 1324 |
14.89 |
| 2026-06-03 00:00 |
00:18:46.64 |
-04:38:21.2 |
HIP 1380 |
25.36 |
| 2026-06-03 12:00 |
00:20:04.72 |
-04:25:59.9 |
HIP 1661 |
22.06 |
| 2026-06-04 00:00 |
00:21:22.86 |
-04:13:36.2 |
HIP 1661 |
10.67 |
| 2026-06-04 12:00 |
00:22:41.07 |
-04:01:10.1 |
HIP 1866 |
20.87 |
| 2026-06-05 00:00 |
00:23:59.33 |
-03:48:41.7 |
HIP 1866 |
6.12 |
| 2026-06-05 12:00 |
00:25:17.66 |
-03:36:11.0 |
HIP 1900 |
20.88 |
| 2026-06-06 00:00 |
00:26:36.04 |
-03:23:38.0 |
HIP 1900 |
39.29 |
| 2026-06-06 12:00 |
00:27:54.50 |
-03:11:02.7 |
HIP 2312 |
29.21 |
| 2026-06-07 00:00 |
00:29:13.01 |
-02:58:25.1 |
HIP 2323 |
10.30 |
| 2026-06-07 12:00 |
00:30:31.59 |
-02:45:45.3 |
HIP 2323 |
13.93 |
| 2026-06-08 00:00 |
00:31:50.23 |
-02:33:03.3 |
HIP 2654 |
29.12 |
| 2026-06-08 12:00 |
00:33:08.94 |
-02:20:19.1 |
HIP 2698 |
17.00 |
| 2026-06-09 00:00 |
00:34:27.72 |
-02:07:32.7 |
HIP 2786 |
16.60 |
| 2026-06-09 12:00 |
00:35:46.56 |
-01:54:44.1 |
HIP 2786 |
9.87 |
| 2026-06-10 00:00 |
00:37:05.46 |
-01:41:53.4 |
HIP 2786 |
32.03 |
| 2026-06-10 12:00 |
00:38:24.44 |
-01:29:00.6 |
HIP 3072 |
21.03 |
| 2026-06-11 00:00 |
00:39:43.48 |
-01:16:05.7 |
HIP 3072 |
12.75 |
| 2026-06-11 12:00 |
00:41:02.58 |
-01:03:08.8 |
HIP 3264 |
16.66 |
| 2026-06-12 00:00 |
00:42:21.76 |
-00:50:09.9 |
HIP 3410 |
16.11 |
| 2026-06-12 12:00 |
00:43:41.00 |
-00:37:08.9 |
HIP 3410 |
17.00 |
| 2026-06-13 00:00 |
00:45:00.31 |
-00:24:06.0 |
HIP 3410 |
38.01 |
| 2026-06-13 12:00 |
00:46:19.68 |
-00:11:01.1 |
HIP 3738 |
25.44 |
| 2026-06-14 00:00 |
00:47:39.13 |
+00:02:05.7 |
HIP 3738 |
17.47 |
| 2026-06-14 12:00 |
00:48:58.64 |
+00:15:14.5 |
HIP 3777 |
9.98 |
| 2026-06-15 00:00 |
00:50:18.22 |
+00:28:25.0 |
HIP 3863 |
12.78 |
| 2026-06-15 12:00 |
00:51:37.87 |
+00:41:37.5 |
HIP 4007 |
13.31 |
| 2026-06-16 00:00 |
00:52:57.60 |
+00:54:51.7 |
HIP 4007 |
22.86 |
| 2026-06-16 12:00 |
00:54:17.39 |
+01:08:07.8 |
HIP 4312 |
18.30 |
| 2026-06-17 00:00 |
00:55:37.25 |
+01:21:25.6 |
HIP 4465 |
24.24 |
| 2026-06-17 12:00 |
00:56:57.18 |
+01:34:45.1 |
HIP 4465 |
13.59 |
| 2026-06-18 00:00 |
00:58:17.18 |
+01:48:06.3 |
HIP 4500 |
9.43 |
| 2026-06-18 12:00 |
00:59:37.26 |
+02:01:29.3 |
HIP 4504 |
29.05 |
| 2026-06-19 00:00 |
01:00:57.41 |
+02:14:53.9 |
HIP 4738 |
20.21 |
| 2026-06-19 12:00 |
01:02:17.63 |
+02:28:20.1 |
HIP 4825 |
5.53 |
| 2026-06-20 00:00 |
01:03:37.93 |
+02:41:47.9 |
HIP 4825 |
26.60 |
| 2026-06-20 12:00 |
01:04:58.30 |
+02:55:17.3 |
HIP 5166 |
27.07 |
| 2026-06-21 00:00 |
01:06:18.75 |
+03:08:48.3 |
HIP 5166 |
8.34 |
| 2026-06-21 12:00 |
01:07:39.28 |
+03:22:20.7 |
HIP 5166 |
24.07 |
| 2026-06-22 00:00 |
01:08:59.88 |
+03:35:54.7 |
HIP 5230 |
34.15 |