메타데이터
| 항목 |
값 |
| Designation |
C/2011 N2 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-10-18T17:49:39.725760Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:53Z |
| Obs used |
46 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
21.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-07-25.0000000 |
| e |
0.99970333 |
| q (au) |
2.563360 |
| a (au) |
8640.435892 |
| i (deg) |
33.675025 |
| Ω (om, deg) |
274.019032 |
| ω (w, deg) |
357.041413 |
| M (ma, deg) |
359.999895 |
밝기
산란 + 전체 선형
$$
M_a = (8.856 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.856 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.747 |
| 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) |
| 2026-06-01 00:00 |
03:45:23.10 |
+38:49:51.9 |
HIP 17558 |
9.69 |
| 2026-06-01 12:00 |
03:45:27.87 |
+38:50:05.6 |
HIP 17558 |
9.69 |
| 2026-06-02 00:00 |
03:45:32.64 |
+38:50:19.4 |
HIP 17558 |
9.79 |
| 2026-06-02 12:00 |
03:45:37.41 |
+38:50:33.3 |
HIP 17558 |
9.98 |
| 2026-06-03 00:00 |
03:45:42.16 |
+38:50:47.3 |
HIP 17558 |
10.26 |
| 2026-06-03 12:00 |
03:45:46.90 |
+38:51:01.4 |
HIP 17558 |
10.62 |
| 2026-06-04 00:00 |
03:45:51.64 |
+38:51:15.6 |
HIP 17558 |
11.06 |
| 2026-06-04 12:00 |
03:45:56.37 |
+38:51:30.0 |
HIP 17558 |
11.55 |
| 2026-06-05 00:00 |
03:46:01.09 |
+38:51:44.4 |
HIP 17558 |
12.11 |
| 2026-06-05 12:00 |
03:46:05.79 |
+38:51:59.0 |
HIP 17558 |
12.71 |
| 2026-06-06 00:00 |
03:46:10.49 |
+38:52:13.7 |
HIP 17558 |
13.35 |
| 2026-06-06 12:00 |
03:46:15.18 |
+38:52:28.4 |
HIP 17558 |
14.02 |
| 2026-06-07 00:00 |
03:46:19.86 |
+38:52:43.3 |
HIP 17558 |
14.73 |
| 2026-06-07 12:00 |
03:46:24.53 |
+38:52:58.3 |
HIP 17558 |
15.46 |
| 2026-06-08 00:00 |
03:46:29.18 |
+38:53:13.4 |
HIP 17558 |
16.22 |
| 2026-06-08 12:00 |
03:46:33.83 |
+38:53:28.6 |
HIP 17558 |
16.99 |
| 2026-06-09 00:00 |
03:46:38.46 |
+38:53:43.9 |
HIP 17558 |
17.78 |
| 2026-06-09 12:00 |
03:46:43.08 |
+38:53:59.2 |
HIP 17558 |
18.58 |
| 2026-06-10 00:00 |
03:46:47.69 |
+38:54:14.7 |
HIP 17719 |
18.52 |
| 2026-06-10 12:00 |
03:46:52.29 |
+38:54:30.3 |
HIP 17719 |
17.81 |
| 2026-06-11 00:00 |
03:46:56.87 |
+38:54:46.0 |
HIP 17719 |
17.13 |
| 2026-06-11 12:00 |
03:47:01.45 |
+38:55:01.8 |
HIP 17719 |
16.47 |
| 2026-06-12 00:00 |
03:47:06.00 |
+38:55:17.6 |
HIP 17719 |
15.84 |
| 2026-06-12 12:00 |
03:47:10.55 |
+38:55:33.6 |
HIP 17719 |
15.24 |
| 2026-06-13 00:00 |
03:47:15.08 |
+38:55:49.7 |
HIP 17719 |
14.67 |
| 2026-06-13 12:00 |
03:47:19.60 |
+38:56:05.8 |
HIP 17719 |
14.14 |
| 2026-06-14 00:00 |
03:47:24.10 |
+38:56:22.1 |
HIP 17719 |
13.65 |
| 2026-06-14 12:00 |
03:47:28.59 |
+38:56:38.4 |
HIP 17719 |
13.20 |
| 2026-06-15 00:00 |
03:47:33.06 |
+38:56:54.8 |
HIP 17719 |
12.80 |
| 2026-06-15 12:00 |
03:47:37.52 |
+38:57:11.3 |
HIP 17719 |
12.45 |
| 2026-06-16 00:00 |
03:47:41.96 |
+38:57:27.9 |
HIP 17719 |
12.16 |
| 2026-06-16 12:00 |
03:47:46.39 |
+38:57:44.6 |
HIP 17719 |
11.93 |
| 2026-06-17 00:00 |
03:47:50.80 |
+38:58:01.4 |
HIP 17719 |
11.76 |
| 2026-06-17 12:00 |
03:47:55.19 |
+38:58:18.2 |
HIP 17719 |
11.66 |
| 2026-06-18 00:00 |
03:47:59.57 |
+38:58:35.2 |
HIP 17719 |
11.62 |
| 2026-06-18 12:00 |
03:48:03.93 |
+38:58:52.2 |
HIP 17719 |
11.65 |
| 2026-06-19 00:00 |
03:48:08.27 |
+38:59:09.3 |
HIP 17719 |
11.75 |
| 2026-06-19 12:00 |
03:48:12.60 |
+38:59:26.4 |
HIP 17719 |
11.91 |
| 2026-06-20 00:00 |
03:48:16.91 |
+38:59:43.7 |
HIP 17719 |
12.12 |
| 2026-06-20 12:00 |
03:48:21.20 |
+39:00:01.0 |
HIP 17719 |
12.40 |
| 2026-06-21 00:00 |
03:48:25.47 |
+39:00:18.4 |
HIP 17719 |
12.72 |
| 2026-06-21 12:00 |
03:48:29.72 |
+39:00:35.9 |
HIP 17890 |
13.05 |
| 2026-06-22 00:00 |
03:48:33.95 |
+39:00:53.4 |
HIP 17890 |
12.28 |