메타데이터
| 항목 |
값 |
| Designation |
C/2013 O3 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-09-09T23:40:11.818560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:38Z |
| Obs used |
103 |
| NEO |
- |
| M1 |
14.500 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-10-05.0000000 |
| e |
0.99612066 |
| q (au) |
3.180104 |
| a (au) |
819.754366 |
| i (deg) |
102.839741 |
| Ω (om, deg) |
276.752114 |
| ω (w, deg) |
337.968517 |
| M (ma, deg) |
0.001050 |
밝기
산란 + 전체 선형
$$
M_a = (14.626 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.626 |
| n |
2.000 |
| gf |
0.994 |
| gb |
-1.000 |
| k |
0.995 |
| 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 |
10:23:26.62 |
+75:44:46.4 |
HIP 50980 |
6.60 |
| 2026-05-12 12:00 |
10:23:21.59 |
+75:43:50.1 |
HIP 50980 |
6.31 |
| 2026-05-13 00:00 |
10:23:16.71 |
+75:42:53.5 |
HIP 50980 |
6.15 |
| 2026-05-13 12:00 |
10:23:11.98 |
+75:41:56.8 |
HIP 50980 |
6.15 |
| 2026-05-14 00:00 |
10:23:07.39 |
+75:41:00.0 |
HIP 50980 |
6.29 |
| 2026-05-14 12:00 |
10:23:02.95 |
+75:40:02.9 |
HIP 50980 |
6.57 |
| 2026-05-15 00:00 |
10:22:58.65 |
+75:39:05.7 |
HIP 50980 |
6.97 |
| 2026-05-15 12:00 |
10:22:54.50 |
+75:38:08.4 |
HIP 50980 |
7.48 |
| 2026-05-16 00:00 |
10:22:50.49 |
+75:37:10.9 |
HIP 50980 |
8.07 |
| 2026-05-16 12:00 |
10:22:46.62 |
+75:36:13.3 |
HIP 50980 |
8.73 |
| 2026-05-17 00:00 |
10:22:42.89 |
+75:35:15.6 |
HIP 50980 |
9.44 |
| 2026-05-17 12:00 |
10:22:39.31 |
+75:34:17.7 |
HIP 50980 |
10.19 |
| 2026-05-18 00:00 |
10:22:35.87 |
+75:33:19.7 |
HIP 50980 |
10.97 |
| 2026-05-18 12:00 |
10:22:32.58 |
+75:32:21.6 |
HIP 50980 |
11.78 |
| 2026-05-19 00:00 |
10:22:29.42 |
+75:31:23.4 |
HIP 50980 |
12.61 |
| 2026-05-19 12:00 |
10:22:26.41 |
+75:30:25.1 |
HIP 50980 |
13.46 |
| 2026-05-20 00:00 |
10:22:23.53 |
+75:29:26.6 |
HIP 50980 |
14.32 |
| 2026-05-20 12:00 |
10:22:20.80 |
+75:28:28.1 |
HIP 50980 |
15.20 |
| 2026-05-21 00:00 |
10:22:18.21 |
+75:27:29.5 |
HIP 50980 |
16.08 |
| 2026-05-21 12:00 |
10:22:15.75 |
+75:26:30.8 |
HIP 50980 |
16.98 |
| 2026-05-22 00:00 |
10:22:13.43 |
+75:25:32.0 |
HIP 50980 |
17.88 |
| 2026-05-22 12:00 |
10:22:11.25 |
+75:24:33.1 |
HIP 50980 |
18.78 |
| 2026-05-23 00:00 |
10:22:09.21 |
+75:23:34.2 |
HIP 50980 |
19.69 |
| 2026-05-23 12:00 |
10:22:07.31 |
+75:22:35.1 |
HIP 50980 |
20.61 |
| 2026-05-24 00:00 |
10:22:05.54 |
+75:21:36.1 |
HIP 50386 |
20.92 |
| 2026-05-24 12:00 |
10:22:03.90 |
+75:20:36.9 |
HIP 50386 |
20.39 |
| 2026-05-25 00:00 |
10:22:02.40 |
+75:19:37.7 |
HIP 50386 |
19.90 |
| 2026-05-25 12:00 |
10:22:01.03 |
+75:18:38.4 |
HIP 50386 |
19.45 |
| 2026-05-26 00:00 |
10:21:59.80 |
+75:17:39.1 |
HIP 50386 |
19.06 |
| 2026-05-26 12:00 |
10:21:58.70 |
+75:16:39.7 |
HIP 50386 |
18.72 |
| 2026-05-27 00:00 |
10:21:57.73 |
+75:15:40.3 |
HIP 50386 |
18.43 |
| 2026-05-27 12:00 |
10:21:56.90 |
+75:14:40.9 |
HIP 50386 |
18.20 |
| 2026-05-28 00:00 |
10:21:56.19 |
+75:13:41.4 |
HIP 50386 |
18.03 |
| 2026-05-28 12:00 |
10:21:55.62 |
+75:12:41.9 |
HIP 50386 |
17.92 |
| 2026-05-29 00:00 |
10:21:55.17 |
+75:11:42.3 |
HIP 50386 |
17.88 |
| 2026-05-29 12:00 |
10:21:54.86 |
+75:10:42.7 |
HIP 50386 |
17.90 |
| 2026-05-30 00:00 |
10:21:54.67 |
+75:09:43.1 |
HIP 50386 |
17.98 |
| 2026-05-30 12:00 |
10:21:54.61 |
+75:08:43.5 |
HIP 50386 |
18.12 |
| 2026-05-31 00:00 |
10:21:54.68 |
+75:07:43.9 |
HIP 50386 |
18.33 |
| 2026-05-31 12:00 |
10:21:54.88 |
+75:06:44.3 |
HIP 50386 |
18.59 |
| 2026-06-01 00:00 |
10:21:55.20 |
+75:05:44.6 |
HIP 50386 |
18.91 |
| 2026-06-01 12:00 |
10:21:55.64 |
+75:04:45.0 |
HIP 50386 |
19.28 |
| 2026-06-02 00:00 |
10:21:56.22 |
+75:03:45.4 |
HIP 50386 |
19.71 |