메타데이터
| 항목 |
값 |
| Designation |
C/2006 K3 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-03-13T08:54:02.200320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:57Z |
| Obs used |
205 |
| NEO |
- |
| M1 |
12.500 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2006-11-30.0000000 |
| e |
1.00079393 |
| q (au) |
2.501449 |
| a (au) |
-3150.724234 |
| i (deg) |
92.619997 |
| Ω (om, deg) |
49.402439 |
| ω (w, deg) |
328.077856 |
| M (ma, deg) |
-0.000576 |
밝기
산란 + 전체 선형
$$
M_a = (15.835 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.835 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.800 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2006-05-22 |
2007-03-09 |
-2.3577 |
+1.206 |
| 2007-07-25 |
2008-01-26 |
+22.6017 |
-11.094 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
16:41:09.58 |
+41:21:53.2 |
HIP 81718 |
4.77 |
| 2026-03-26 12:00 |
16:41:07.86 |
+41:22:30.9 |
HIP 81718 |
5.39 |
| 2026-03-27 00:00 |
16:41:06.10 |
+41:23:08.5 |
HIP 81718 |
6.03 |
| 2026-03-27 12:00 |
16:41:04.30 |
+41:23:45.9 |
HIP 81718 |
6.68 |
| 2026-03-28 00:00 |
16:41:02.48 |
+41:24:23.2 |
HIP 81718 |
7.35 |
| 2026-03-28 12:00 |
16:41:00.61 |
+41:25:00.4 |
HIP 81718 |
8.03 |
| 2026-03-29 00:00 |
16:40:58.72 |
+41:25:37.5 |
HIP 81718 |
8.72 |
| 2026-03-29 12:00 |
16:40:56.80 |
+41:26:14.4 |
HIP 81718 |
9.41 |
| 2026-03-30 00:00 |
16:40:54.84 |
+41:26:51.1 |
HIP 81718 |
10.11 |
| 2026-03-30 12:00 |
16:40:52.84 |
+41:27:27.7 |
HIP 81718 |
10.81 |
| 2026-03-31 00:00 |
16:40:50.82 |
+41:28:04.2 |
HIP 81718 |
11.52 |
| 2026-03-31 12:00 |
16:40:48.76 |
+41:28:40.5 |
HIP 81718 |
12.23 |
| 2026-04-01 00:00 |
16:40:46.68 |
+41:29:16.7 |
HIP 81718 |
12.94 |
| 2026-04-01 12:00 |
16:40:44.56 |
+41:29:52.7 |
HIP 81718 |
13.66 |
| 2026-04-02 00:00 |
16:40:42.40 |
+41:30:28.5 |
HIP 81718 |
14.37 |
| 2026-04-02 12:00 |
16:40:40.22 |
+41:31:04.2 |
HIP 81718 |
15.09 |
| 2026-04-03 00:00 |
16:40:38.00 |
+41:31:39.7 |
HIP 81718 |
15.81 |
| 2026-04-03 12:00 |
16:40:35.76 |
+41:32:15.1 |
HIP 81718 |
16.54 |
| 2026-04-04 00:00 |
16:40:33.48 |
+41:32:50.2 |
HIP 81718 |
17.26 |
| 2026-04-04 12:00 |
16:40:31.17 |
+41:33:25.2 |
HIP 81718 |
17.98 |
| 2026-04-05 00:00 |
16:40:28.83 |
+41:34:00.1 |
HIP 81718 |
18.71 |
| 2026-04-05 12:00 |
16:40:26.46 |
+41:34:34.7 |
HIP 81718 |
19.44 |
| 2026-04-06 00:00 |
16:40:24.06 |
+41:35:09.2 |
HIP 81718 |
20.17 |
| 2026-04-06 12:00 |
16:40:21.63 |
+41:35:43.4 |
HIP 81718 |
20.90 |
| 2026-04-07 00:00 |
16:40:19.16 |
+41:36:17.5 |
HIP 81718 |
21.63 |
| 2026-04-07 12:00 |
16:40:16.67 |
+41:36:51.4 |
HIP 81718 |
22.36 |
| 2026-04-08 00:00 |
16:40:14.15 |
+41:37:25.1 |
HIP 81718 |
23.10 |
| 2026-04-08 12:00 |
16:40:11.60 |
+41:37:58.6 |
HIP 81718 |
23.83 |
| 2026-04-09 00:00 |
16:40:09.01 |
+41:38:32.0 |
HIP 81718 |
24.56 |
| 2026-04-09 12:00 |
16:40:06.40 |
+41:39:05.1 |
HIP 81718 |
25.30 |
| 2026-04-10 00:00 |
16:40:03.76 |
+41:39:38.0 |
HIP 81718 |
26.04 |
| 2026-04-10 12:00 |
16:40:01.09 |
+41:40:10.7 |
HIP 81718 |
26.77 |
| 2026-04-11 00:00 |
16:39:58.39 |
+41:40:43.1 |
HIP 81718 |
27.51 |
| 2026-04-11 12:00 |
16:39:55.67 |
+41:41:15.4 |
HIP 81718 |
28.25 |
| 2026-04-12 00:00 |
16:39:52.91 |
+41:41:47.5 |
HIP 81718 |
28.99 |
| 2026-04-12 12:00 |
16:39:50.12 |
+41:42:19.3 |
HIP 81718 |
29.73 |
| 2026-04-13 00:00 |
16:39:47.31 |
+41:42:50.9 |
HIP 81718 |
30.47 |
| 2026-04-13 12:00 |
16:39:44.47 |
+41:43:22.3 |
HIP 81718 |
31.21 |
| 2026-04-14 00:00 |
16:39:41.60 |
+41:43:53.5 |
HIP 81718 |
31.96 |
| 2026-04-14 12:00 |
16:39:38.71 |
+41:44:24.4 |
HIP 81718 |
32.70 |
| 2026-04-15 00:00 |
16:39:35.78 |
+41:44:55.1 |
HIP 81718 |
33.44 |
| 2026-04-15 12:00 |
16:39:32.83 |
+41:45:25.5 |
HIP 81718 |
34.18 |
| 2026-04-16 00:00 |
16:39:29.85 |
+41:45:55.8 |
HIP 81718 |
34.93 |