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 |
0.992 |
| 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) |
| 2026-06-01 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 |
| 2026-06-02 12:00 |
10:21:56.91 |
+75:02:45.7 |
HIP 50972 |
19.57 |
| 2026-06-03 00:00 |
10:21:57.73 |
+75:01:46.1 |
HIP 50972 |
18.72 |
| 2026-06-03 12:00 |
10:21:58.67 |
+75:00:46.5 |
HIP 50972 |
17.88 |
| 2026-06-04 00:00 |
10:21:59.74 |
+74:59:46.9 |
HIP 50972 |
17.06 |
| 2026-06-04 12:00 |
10:22:00.92 |
+74:58:47.3 |
HIP 50972 |
16.25 |
| 2026-06-05 00:00 |
10:22:02.23 |
+74:57:47.7 |
HIP 50972 |
15.45 |
| 2026-06-05 12:00 |
10:22:03.66 |
+74:56:48.2 |
HIP 50972 |
14.67 |
| 2026-06-06 00:00 |
10:22:05.21 |
+74:55:48.7 |
HIP 50972 |
13.92 |
| 2026-06-06 12:00 |
10:22:06.88 |
+74:54:49.2 |
HIP 50972 |
13.19 |
| 2026-06-07 00:00 |
10:22:08.66 |
+74:53:49.8 |
HIP 50972 |
12.50 |
| 2026-06-07 12:00 |
10:22:10.57 |
+74:52:50.4 |
HIP 50972 |
11.84 |
| 2026-06-08 00:00 |
10:22:12.59 |
+74:51:51.1 |
HIP 50972 |
11.23 |
| 2026-06-08 12:00 |
10:22:14.73 |
+74:50:51.7 |
HIP 50972 |
10.66 |
| 2026-06-09 00:00 |
10:22:16.99 |
+74:49:52.5 |
HIP 50972 |
10.16 |
| 2026-06-09 12:00 |
10:22:19.36 |
+74:48:53.3 |
HIP 50972 |
9.72 |
| 2026-06-10 00:00 |
10:22:21.85 |
+74:47:54.2 |
HIP 50972 |
9.37 |
| 2026-06-10 12:00 |
10:22:24.45 |
+74:46:55.1 |
HIP 50972 |
9.10 |
| 2026-06-11 00:00 |
10:22:27.16 |
+74:45:56.1 |
HIP 50972 |
8.93 |
| 2026-06-11 12:00 |
10:22:29.99 |
+74:44:57.1 |
HIP 50972 |
8.86 |
| 2026-06-12 00:00 |
10:22:32.93 |
+74:43:58.3 |
HIP 50972 |
8.90 |
| 2026-06-12 12:00 |
10:22:35.99 |
+74:42:59.5 |
HIP 50972 |
9.03 |
| 2026-06-13 00:00 |
10:22:39.15 |
+74:42:00.7 |
HIP 50972 |
9.27 |
| 2026-06-13 12:00 |
10:22:42.43 |
+74:41:02.1 |
HIP 50972 |
9.60 |
| 2026-06-14 00:00 |
10:22:45.81 |
+74:40:03.6 |
HIP 50972 |
10.01 |
| 2026-06-14 12:00 |
10:22:49.31 |
+74:39:05.1 |
HIP 50972 |
10.50 |
| 2026-06-15 00:00 |
10:22:52.91 |
+74:38:06.8 |
HIP 50972 |
11.05 |
| 2026-06-15 12:00 |
10:22:56.62 |
+74:37:08.5 |
HIP 50972 |
11.65 |
| 2026-06-16 00:00 |
10:23:00.44 |
+74:36:10.4 |
HIP 50972 |
12.30 |
| 2026-06-16 12:00 |
10:23:04.37 |
+74:35:12.3 |
HIP 50972 |
12.99 |
| 2026-06-17 00:00 |
10:23:08.40 |
+74:34:14.4 |
HIP 50972 |
13.71 |
| 2026-06-17 12:00 |
10:23:12.53 |
+74:33:16.5 |
HIP 50972 |
14.46 |
| 2026-06-18 00:00 |
10:23:16.77 |
+74:32:18.8 |
HIP 50972 |
15.24 |
| 2026-06-18 12:00 |
10:23:21.11 |
+74:31:21.3 |
HIP 50972 |
16.03 |
| 2026-06-19 00:00 |
10:23:25.56 |
+74:30:23.8 |
HIP 50972 |
16.85 |
| 2026-06-19 12:00 |
10:23:30.11 |
+74:29:26.5 |
HIP 50972 |
17.68 |
| 2026-06-20 00:00 |
10:23:34.75 |
+74:28:29.3 |
HIP 50972 |
18.52 |
| 2026-06-20 12:00 |
10:23:39.50 |
+74:27:32.2 |
HIP 50972 |
19.37 |
| 2026-06-21 00:00 |
10:23:44.34 |
+74:26:35.3 |
HIP 50972 |
20.24 |
| 2026-06-21 12:00 |
10:23:49.29 |
+74:25:38.5 |
HIP 50972 |
21.11 |
| 2026-06-22 00:00 |
10:23:54.33 |
+74:24:41.8 |
HIP 50972 |
21.99 |