메타데이터
| 항목 |
값 |
| Designation |
C/2013 J3 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-02-22T21:02:36.003840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:35Z |
| Obs used |
105 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
14.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-07-03.0000000 |
| e |
0.99795766 |
| q (au) |
3.988692 |
| a (au) |
1952.998658 |
| i (deg) |
118.225398 |
| Ω (om, deg) |
200.757159 |
| ω (w, deg) |
320.958517 |
| M (ma, deg) |
0.001486 |
밝기
산란 + 전체 선형
$$
M_a = (5.562 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.562 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-05-12 00:00 |
07:02:02.92 |
+82:57:27.8 |
HIP 34235 |
39.85 |
| 2026-05-12 12:00 |
07:02:19.51 |
+82:56:42.2 |
HIP 35159 |
39.96 |
| 2026-05-13 00:00 |
07:02:36.27 |
+82:55:56.8 |
HIP 35159 |
39.06 |
| 2026-05-13 12:00 |
07:02:53.18 |
+82:55:11.6 |
HIP 35159 |
38.15 |
| 2026-05-14 00:00 |
07:03:10.26 |
+82:54:26.7 |
HIP 35159 |
37.24 |
| 2026-05-14 12:00 |
07:03:27.50 |
+82:53:42.0 |
HIP 35159 |
36.34 |
| 2026-05-15 00:00 |
07:03:44.89 |
+82:52:57.6 |
HIP 35159 |
35.43 |
| 2026-05-15 12:00 |
07:04:02.44 |
+82:52:13.4 |
HIP 35159 |
34.52 |
| 2026-05-16 00:00 |
07:04:20.14 |
+82:51:29.4 |
HIP 35159 |
33.61 |
| 2026-05-16 12:00 |
07:04:37.99 |
+82:50:45.7 |
HIP 35159 |
32.70 |
| 2026-05-17 00:00 |
07:04:55.99 |
+82:50:02.2 |
HIP 35159 |
31.78 |
| 2026-05-17 12:00 |
07:05:14.14 |
+82:49:19.0 |
HIP 35159 |
30.87 |
| 2026-05-18 00:00 |
07:05:32.43 |
+82:48:36.1 |
HIP 35159 |
29.96 |
| 2026-05-18 12:00 |
07:05:50.87 |
+82:47:53.3 |
HIP 35159 |
29.04 |
| 2026-05-19 00:00 |
07:06:09.44 |
+82:47:10.9 |
HIP 35159 |
28.13 |
| 2026-05-19 12:00 |
07:06:28.16 |
+82:46:28.7 |
HIP 35159 |
27.22 |
| 2026-05-20 00:00 |
07:06:47.01 |
+82:45:46.7 |
HIP 35159 |
26.30 |
| 2026-05-20 12:00 |
07:07:06.00 |
+82:45:05.1 |
HIP 35159 |
25.38 |
| 2026-05-21 00:00 |
07:07:25.12 |
+82:44:23.6 |
HIP 35159 |
24.47 |
| 2026-05-21 12:00 |
07:07:44.37 |
+82:43:42.5 |
HIP 35159 |
23.55 |
| 2026-05-22 00:00 |
07:08:03.75 |
+82:43:01.6 |
HIP 35159 |
22.64 |
| 2026-05-22 12:00 |
07:08:23.25 |
+82:42:20.9 |
HIP 35159 |
21.72 |
| 2026-05-23 00:00 |
07:08:42.88 |
+82:41:40.6 |
HIP 35159 |
20.80 |
| 2026-05-23 12:00 |
07:09:02.64 |
+82:41:00.5 |
HIP 35159 |
19.88 |
| 2026-05-24 00:00 |
07:09:22.52 |
+82:40:20.6 |
HIP 35159 |
18.97 |
| 2026-05-24 12:00 |
07:09:42.52 |
+82:39:41.1 |
HIP 35159 |
18.05 |
| 2026-05-25 00:00 |
07:10:02.63 |
+82:39:01.8 |
HIP 35159 |
17.13 |
| 2026-05-25 12:00 |
07:10:22.87 |
+82:38:22.7 |
HIP 35159 |
16.21 |
| 2026-05-26 00:00 |
07:10:43.22 |
+82:37:44.0 |
HIP 35159 |
15.30 |
| 2026-05-26 12:00 |
07:11:03.68 |
+82:37:05.5 |
HIP 35159 |
14.38 |
| 2026-05-27 00:00 |
07:11:24.26 |
+82:36:27.3 |
HIP 35159 |
13.46 |
| 2026-05-27 12:00 |
07:11:44.94 |
+82:35:49.3 |
HIP 35159 |
12.55 |
| 2026-05-28 00:00 |
07:12:05.74 |
+82:35:11.7 |
HIP 35159 |
11.63 |
| 2026-05-28 12:00 |
07:12:26.64 |
+82:34:34.3 |
HIP 35159 |
10.72 |
| 2026-05-29 00:00 |
07:12:47.65 |
+82:33:57.2 |
HIP 35159 |
9.81 |
| 2026-05-29 12:00 |
07:13:08.76 |
+82:33:20.4 |
HIP 35159 |
8.90 |
| 2026-05-30 00:00 |
07:13:29.98 |
+82:32:43.8 |
HIP 35159 |
7.99 |
| 2026-05-30 12:00 |
07:13:51.30 |
+82:32:07.5 |
HIP 35159 |
7.09 |
| 2026-05-31 00:00 |
07:14:12.72 |
+82:31:31.5 |
HIP 35159 |
6.20 |
| 2026-05-31 12:00 |
07:14:34.24 |
+82:30:55.8 |
HIP 35159 |
5.31 |
| 2026-06-01 00:00 |
07:14:55.86 |
+82:30:20.4 |
HIP 35159 |
4.45 |
| 2026-06-01 12:00 |
07:15:17.57 |
+82:29:45.2 |
HIP 35159 |
3.61 |
| 2026-06-02 00:00 |
07:15:39.38 |
+82:29:10.4 |
HIP 35159 |
2.83 |