메타데이터
| 항목 |
값 |
| Designation |
130P/McNaught-Hughes |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-01-21T18:21:27.048960Z |
| Orbit solution date (soln_date, UTC) |
2025-12-29T09:23:47Z |
| Obs used |
2366 |
| NEO |
- |
| M1 |
10.500 |
| K1 |
14.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2018-03-01.0000000 |
| e |
0.46080056 |
| q (au) |
1.823638 |
| a (au) |
3.382121 |
| i (deg) |
6.065359 |
| Ω (om, deg) |
70.255716 |
| ω (w, deg) |
245.911679 |
| M (ma, deg) |
6.058743 |
밝기
산란 + 전체 선형
$$
M_a = (10.080 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.080 |
| n |
6.000 |
| gf |
0.880 |
| gb |
-0.718 |
| k |
0.973 |
| δ90 |
1.000 |
| 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 |
| 2022-03-07 |
2024-10-22 |
+6.2419 |
-2.381 |
| 2024-10-22 |
2025-12-21 |
+6.4393 |
-2.799 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
06:44:59.97 |
+26:27:17.0 |
HIP 32306 |
19.84 |
| 2026-05-12 12:00 |
06:45:25.97 |
+26:26:45.7 |
HIP 32306 |
21.26 |
| 2026-05-13 00:00 |
06:45:52.05 |
+26:26:14.1 |
HIP 32518 |
19.12 |
| 2026-05-13 12:00 |
06:46:18.22 |
+26:25:42.3 |
HIP 32518 |
14.20 |
| 2026-05-14 00:00 |
06:46:44.48 |
+26:25:10.2 |
HIP 32518 |
10.34 |
| 2026-05-14 12:00 |
06:47:10.81 |
+26:24:37.8 |
HIP 32518 |
9.05 |
| 2026-05-15 00:00 |
06:47:37.24 |
+26:24:05.1 |
HIP 32518 |
11.27 |
| 2026-05-15 12:00 |
06:48:03.74 |
+26:23:32.2 |
HIP 32663 |
11.54 |
| 2026-05-16 00:00 |
06:48:30.32 |
+26:22:58.9 |
HIP 32663 |
6.58 |
| 2026-05-16 12:00 |
06:48:56.99 |
+26:22:25.4 |
HIP 32663 |
5.01 |
| 2026-05-17 00:00 |
06:49:23.73 |
+26:21:51.7 |
HIP 32663 |
8.89 |
| 2026-05-17 12:00 |
06:49:50.56 |
+26:21:17.6 |
HIP 32663 |
14.35 |
| 2026-05-18 00:00 |
06:50:17.45 |
+26:20:43.3 |
HIP 32663 |
20.16 |
| 2026-05-18 12:00 |
06:50:44.43 |
+26:20:08.6 |
HIP 32959 |
15.92 |
| 2026-05-19 00:00 |
06:51:11.48 |
+26:19:33.7 |
HIP 32959 |
10.39 |
| 2026-05-19 12:00 |
06:51:38.60 |
+26:18:58.5 |
HIP 32959 |
6.04 |
| 2026-05-20 00:00 |
06:52:05.79 |
+26:18:23.1 |
HIP 32959 |
6.29 |
| 2026-05-20 12:00 |
06:52:33.06 |
+26:17:47.3 |
HIP 32959 |
10.86 |
| 2026-05-21 00:00 |
06:53:00.40 |
+26:17:11.2 |
HIP 32959 |
16.50 |
| 2026-05-21 12:00 |
06:53:27.80 |
+26:16:34.9 |
HIP 33194 |
20.54 |
| 2026-05-22 00:00 |
06:53:55.27 |
+26:15:58.3 |
HIP 33194 |
17.59 |
| 2026-05-22 12:00 |
06:54:22.81 |
+26:15:21.4 |
HIP 33194 |
16.55 |
| 2026-05-23 00:00 |
06:54:50.42 |
+26:14:44.2 |
HIP 33194 |
17.76 |
| 2026-05-23 12:00 |
06:55:18.09 |
+26:14:06.7 |
HIP 33194 |
20.85 |
| 2026-05-24 00:00 |
06:55:45.82 |
+26:13:28.9 |
HIP 33356 |
17.27 |
| 2026-05-24 12:00 |
06:56:13.62 |
+26:12:50.9 |
HIP 33356 |
15.27 |
| 2026-05-25 00:00 |
06:56:41.48 |
+26:12:12.5 |
HIP 33356 |
15.71 |
| 2026-05-25 12:00 |
06:57:09.40 |
+26:11:33.8 |
HIP 33356 |
18.43 |
| 2026-05-26 00:00 |
06:57:37.37 |
+26:10:54.9 |
HIP 33595 |
16.87 |
| 2026-05-26 12:00 |
06:58:05.41 |
+26:10:15.7 |
HIP 33595 |
10.89 |
| 2026-05-27 00:00 |
06:58:33.51 |
+26:09:36.1 |
HIP 33595 |
5.70 |
| 2026-05-27 12:00 |
06:59:01.66 |
+26:08:56.3 |
HIP 33595 |
5.18 |
| 2026-05-28 00:00 |
06:59:29.87 |
+26:08:16.2 |
HIP 33595 |
10.10 |
| 2026-05-28 12:00 |
06:59:58.14 |
+26:07:35.8 |
HIP 33650 |
14.44 |
| 2026-05-29 00:00 |
07:00:26.46 |
+26:06:55.1 |
HIP 33793 |
10.60 |
| 2026-05-29 12:00 |
07:00:54.83 |
+26:06:14.1 |
HIP 33793 |
7.92 |
| 2026-05-30 00:00 |
07:01:23.26 |
+26:05:32.8 |
HIP 33793 |
9.76 |
| 2026-05-30 12:00 |
07:01:51.74 |
+26:04:51.2 |
HIP 33831 |
14.27 |
| 2026-05-31 00:00 |
07:02:20.27 |
+26:04:09.3 |
HIP 33831 |
18.52 |
| 2026-05-31 12:00 |
07:02:48.86 |
+26:03:27.1 |
HIP 33831 |
23.79 |
| 2026-06-01 00:00 |
07:03:17.49 |
+26:02:44.6 |
HIP 33831 |
29.54 |
| 2026-06-01 12:00 |
07:03:46.17 |
+26:02:01.8 |
HIP 33831 |
35.55 |
| 2026-06-02 00:00 |
07:04:14.90 |
+26:01:18.7 |
HIP 34061 |
36.42 |