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) |
| 2026-09-20 00:00 |
10:53:55.73 |
+72:52:53.6 |
HIP 53552 |
22.21 |
| 2026-09-20 12:00 |
10:54:07.01 |
+72:52:58.6 |
HIP 53552 |
21.60 |
| 2026-09-21 00:00 |
10:54:18.26 |
+72:53:04.0 |
HIP 53552 |
21.01 |
| 2026-09-21 12:00 |
10:54:29.48 |
+72:53:09.8 |
HIP 53552 |
20.42 |
| 2026-09-22 00:00 |
10:54:40.68 |
+72:53:16.1 |
HIP 53552 |
19.85 |
| 2026-09-22 12:00 |
10:54:51.85 |
+72:53:22.8 |
HIP 53552 |
19.29 |
| 2026-09-23 00:00 |
10:55:02.99 |
+72:53:30.0 |
HIP 53552 |
18.75 |
| 2026-09-23 12:00 |
10:55:14.10 |
+72:53:37.7 |
HIP 53552 |
18.22 |
| 2026-09-24 00:00 |
10:55:25.18 |
+72:53:45.8 |
HIP 53552 |
17.71 |
| 2026-09-24 12:00 |
10:55:36.23 |
+72:53:54.3 |
HIP 53552 |
17.21 |
| 2026-09-25 00:00 |
10:55:47.25 |
+72:54:03.3 |
HIP 53552 |
16.74 |
| 2026-09-25 12:00 |
10:55:58.24 |
+72:54:12.8 |
HIP 53552 |
16.29 |
| 2026-09-26 00:00 |
10:56:09.19 |
+72:54:22.6 |
HIP 53552 |
15.86 |
| 2026-09-26 12:00 |
10:56:20.11 |
+72:54:33.0 |
HIP 53552 |
15.45 |
| 2026-09-27 00:00 |
10:56:31.00 |
+72:54:43.8 |
HIP 53552 |
15.07 |
| 2026-09-27 12:00 |
10:56:41.86 |
+72:54:55.0 |
HIP 53552 |
14.72 |
| 2026-09-28 00:00 |
10:56:52.68 |
+72:55:06.7 |
HIP 53552 |
14.40 |
| 2026-09-28 12:00 |
10:57:03.46 |
+72:55:18.8 |
HIP 53552 |
14.12 |
| 2026-09-29 00:00 |
10:57:14.21 |
+72:55:31.4 |
HIP 53552 |
13.86 |
| 2026-09-29 12:00 |
10:57:24.92 |
+72:55:44.5 |
HIP 53552 |
13.65 |
| 2026-09-30 00:00 |
10:57:35.59 |
+72:55:57.9 |
HIP 53552 |
13.47 |
| 2026-09-30 12:00 |
10:57:46.23 |
+72:56:11.9 |
HIP 53552 |
13.33 |
| 2026-10-01 00:00 |
10:57:56.83 |
+72:56:26.3 |
HIP 53552 |
13.23 |
| 2026-10-01 12:00 |
10:58:07.39 |
+72:56:41.1 |
HIP 53552 |
13.17 |
| 2026-10-02 00:00 |
10:58:17.90 |
+72:56:56.4 |
HIP 53552 |
13.15 |
| 2026-10-02 12:00 |
10:58:28.38 |
+72:57:12.1 |
HIP 53552 |
13.17 |
| 2026-10-03 00:00 |
10:58:38.82 |
+72:57:28.3 |
HIP 53552 |
13.24 |
| 2026-10-03 12:00 |
10:58:49.21 |
+72:57:44.9 |
HIP 53552 |
13.34 |
| 2026-10-04 00:00 |
10:58:59.56 |
+72:58:01.9 |
HIP 53552 |
13.49 |
| 2026-10-04 12:00 |
10:59:09.87 |
+72:58:19.4 |
HIP 53552 |
13.67 |
| 2026-10-05 00:00 |
10:59:20.14 |
+72:58:37.4 |
HIP 53552 |
13.89 |
| 2026-10-05 12:00 |
10:59:30.36 |
+72:58:55.8 |
HIP 53552 |
14.14 |
| 2026-10-06 00:00 |
10:59:40.53 |
+72:59:14.7 |
HIP 53552 |
14.43 |
| 2026-10-06 12:00 |
10:59:50.66 |
+72:59:34.0 |
HIP 53552 |
14.74 |
| 2026-10-07 00:00 |
11:00:00.74 |
+72:59:53.7 |
HIP 53552 |
15.09 |
| 2026-10-07 12:00 |
11:00:10.77 |
+73:00:13.9 |
HIP 54033 |
15.15 |
| 2026-10-08 00:00 |
11:00:20.76 |
+73:00:34.5 |
HIP 54033 |
14.34 |
| 2026-10-08 12:00 |
11:00:30.69 |
+73:00:55.6 |
HIP 54033 |
13.54 |
| 2026-10-09 00:00 |
11:00:40.57 |
+73:01:17.1 |
HIP 54033 |
12.73 |
| 2026-10-09 12:00 |
11:00:50.41 |
+73:01:39.1 |
HIP 54033 |
11.92 |
| 2026-10-10 00:00 |
11:01:00.19 |
+73:02:01.5 |
HIP 54033 |
11.12 |
| 2026-10-10 12:00 |
11:01:09.92 |
+73:02:24.3 |
HIP 54033 |
10.32 |
| 2026-10-11 00:00 |
11:01:19.59 |
+73:02:47.6 |
HIP 54033 |
9.51 |