메타데이터
| 항목 |
값 |
| Designation |
C/2013 F3 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-05-25T06:10:32.957760Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:32Z |
| Obs used |
301 |
| NEO |
- |
| M1 |
15.400 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-06-20.0000000 |
| e |
0.99704135 |
| q (au) |
2.252615 |
| a (au) |
761.365596 |
| i (deg) |
85.444578 |
| Ω (om, deg) |
266.108702 |
| ω (w, deg) |
18.757634 |
| M (ma, deg) |
0.001208 |
밝기
산란 + 전체 선형
$$
M_a = (14.685 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.685 |
| n |
2.000 |
| gf |
0.979 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
9.839 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2013-05-31 |
2015-04-15 |
-19.7567 |
+7.281 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
05:33:22.44 |
+36:09:30.2 |
HIP 25995 |
11.34 |
| 2026-06-01 12:00 |
05:33:27.19 |
+36:09:25.4 |
HIP 25995 |
11.93 |
| 2026-06-02 00:00 |
05:33:31.95 |
+36:09:20.7 |
HIP 25995 |
12.57 |
| 2026-06-02 12:00 |
05:33:36.71 |
+36:09:16.0 |
HIP 25995 |
13.24 |
| 2026-06-03 00:00 |
05:33:41.48 |
+36:09:11.5 |
HIP 25995 |
13.95 |
| 2026-06-03 12:00 |
05:33:46.26 |
+36:09:07.1 |
HIP 25995 |
14.69 |
| 2026-06-04 00:00 |
05:33:51.05 |
+36:09:02.8 |
HIP 25995 |
15.46 |
| 2026-06-04 12:00 |
05:33:55.84 |
+36:08:58.6 |
HIP 25995 |
16.24 |
| 2026-06-05 00:00 |
05:34:00.64 |
+36:08:54.5 |
HIP 25995 |
17.04 |
| 2026-06-05 12:00 |
05:34:05.44 |
+36:08:50.5 |
HIP 25995 |
17.87 |
| 2026-06-06 00:00 |
05:34:10.25 |
+36:08:46.6 |
HIP 25995 |
18.70 |
| 2026-06-06 12:00 |
05:34:15.07 |
+36:08:42.8 |
HIP 25995 |
19.55 |
| 2026-06-07 00:00 |
05:34:19.89 |
+36:08:39.1 |
HIP 25995 |
20.41 |
| 2026-06-07 12:00 |
05:34:24.72 |
+36:08:35.5 |
HIP 26076 |
20.92 |
| 2026-06-08 00:00 |
05:34:29.55 |
+36:08:32.0 |
HIP 26307 |
21.16 |
| 2026-06-08 12:00 |
05:34:34.38 |
+36:08:28.6 |
HIP 26307 |
20.25 |
| 2026-06-09 00:00 |
05:34:39.22 |
+36:08:25.3 |
HIP 26307 |
19.34 |
| 2026-06-09 12:00 |
05:34:44.06 |
+36:08:22.1 |
HIP 26307 |
18.44 |
| 2026-06-10 00:00 |
05:34:48.90 |
+36:08:19.0 |
HIP 26307 |
17.55 |
| 2026-06-10 12:00 |
05:34:53.75 |
+36:08:16.0 |
HIP 26307 |
16.67 |
| 2026-06-11 00:00 |
05:34:58.60 |
+36:08:13.1 |
HIP 26307 |
15.79 |
| 2026-06-11 12:00 |
05:35:03.46 |
+36:08:10.3 |
HIP 26307 |
14.93 |
| 2026-06-12 00:00 |
05:35:08.31 |
+36:08:07.6 |
HIP 26307 |
14.08 |
| 2026-06-12 12:00 |
05:35:13.17 |
+36:08:05.0 |
HIP 26307 |
13.25 |
| 2026-06-13 00:00 |
05:35:18.03 |
+36:08:02.5 |
HIP 26307 |
12.44 |
| 2026-06-13 12:00 |
05:35:22.88 |
+36:08:00.1 |
HIP 26307 |
11.65 |
| 2026-06-14 00:00 |
05:35:27.74 |
+36:07:57.8 |
HIP 26307 |
10.90 |
| 2026-06-14 12:00 |
05:35:32.61 |
+36:07:55.6 |
HIP 26307 |
10.18 |
| 2026-06-15 00:00 |
05:35:37.47 |
+36:07:53.5 |
HIP 26307 |
9.51 |
| 2026-06-15 12:00 |
05:35:42.33 |
+36:07:51.5 |
HIP 26307 |
8.89 |
| 2026-06-16 00:00 |
05:35:47.19 |
+36:07:49.6 |
HIP 26307 |
8.35 |
| 2026-06-16 12:00 |
05:35:52.04 |
+36:07:47.8 |
HIP 26307 |
7.89 |
| 2026-06-17 00:00 |
05:35:56.90 |
+36:07:46.1 |
HIP 26307 |
7.52 |
| 2026-06-17 12:00 |
05:36:01.76 |
+36:07:44.5 |
HIP 26307 |
7.27 |
| 2026-06-18 00:00 |
05:36:06.61 |
+36:07:43.0 |
HIP 26307 |
7.14 |
| 2026-06-18 12:00 |
05:36:11.46 |
+36:07:41.6 |
HIP 26307 |
7.15 |
| 2026-06-19 00:00 |
05:36:16.31 |
+36:07:40.2 |
HIP 26307 |
7.29 |
| 2026-06-19 12:00 |
05:36:21.16 |
+36:07:39.0 |
HIP 26307 |
7.55 |
| 2026-06-20 00:00 |
05:36:26.00 |
+36:07:37.9 |
HIP 26307 |
7.92 |
| 2026-06-20 12:00 |
05:36:30.84 |
+36:07:36.8 |
HIP 26307 |
8.39 |
| 2026-06-21 00:00 |
05:36:35.68 |
+36:07:35.9 |
HIP 26307 |
8.94 |
| 2026-06-21 12:00 |
05:36:40.51 |
+36:07:35.1 |
HIP 26307 |
9.55 |
| 2026-06-22 00:00 |
05:36:45.34 |
+36:07:34.3 |
HIP 26307 |
10.22 |