메타데이터
| 항목 |
값 |
| Designation |
C/2001 K5 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-10-11T17:47:00.801600Z |
| Orbit solution date (soln_date, UTC) |
2025-08-07T09:12:14Z |
| Obs used |
3292 |
| NEO |
- |
| M1 |
5.900 |
| K1 |
8.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2003-01-31.0000000 |
| e |
0.99953401 |
| q (au) |
5.184239 |
| a (au) |
11125.172368 |
| i (deg) |
72.590404 |
| Ω (om, deg) |
237.457730 |
| ω (w, deg) |
47.054253 |
| M (ma, deg) |
0.000093 |
밝기
산란 + 전체 선형
$$
M_a = (0.479 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
0.479 |
| n |
6.000 |
| gf |
0.890 |
| gb |
-0.500 |
| k |
0.937 |
| δ90 |
3.269 |
| 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 |
| 2001-04-30 |
2002-10-11 |
+9.4650 |
-7.250 |
| 2002-10-11 |
2005-01-02 |
+4.3531 |
-3.239 |
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 |
03:48:08.71 |
+14:30:35.8 |
HIP 17726 |
10.74 |
| 2026-03-26 12:00 |
03:48:10.46 |
+14:30:41.5 |
HIP 17726 |
11.06 |
| 2026-03-27 00:00 |
03:48:12.24 |
+14:30:47.3 |
HIP 17726 |
11.39 |
| 2026-03-27 12:00 |
03:48:14.03 |
+14:30:53.1 |
HIP 17726 |
11.73 |
| 2026-03-28 00:00 |
03:48:15.84 |
+14:30:58.9 |
HIP 17726 |
12.07 |
| 2026-03-28 12:00 |
03:48:17.67 |
+14:31:04.8 |
HIP 17726 |
12.43 |
| 2026-03-29 00:00 |
03:48:19.52 |
+14:31:10.7 |
HIP 17726 |
12.80 |
| 2026-03-29 12:00 |
03:48:21.38 |
+14:31:16.6 |
HIP 17726 |
13.18 |
| 2026-03-30 00:00 |
03:48:23.27 |
+14:31:22.6 |
HIP 17726 |
13.56 |
| 2026-03-30 12:00 |
03:48:25.17 |
+14:31:28.6 |
HIP 17726 |
13.96 |
| 2026-03-31 00:00 |
03:48:27.09 |
+14:31:34.6 |
HIP 17726 |
14.36 |
| 2026-03-31 12:00 |
03:48:29.03 |
+14:31:40.7 |
HIP 17726 |
14.77 |
| 2026-04-01 00:00 |
03:48:30.98 |
+14:31:46.8 |
HIP 17726 |
15.19 |
| 2026-04-01 12:00 |
03:48:32.95 |
+14:31:52.9 |
HIP 17726 |
15.61 |
| 2026-04-02 00:00 |
03:48:34.94 |
+14:31:59.1 |
HIP 17726 |
16.04 |
| 2026-04-02 12:00 |
03:48:36.95 |
+14:32:05.3 |
HIP 17726 |
16.48 |
| 2026-04-03 00:00 |
03:48:38.97 |
+14:32:11.5 |
HIP 17726 |
16.93 |
| 2026-04-03 12:00 |
03:48:41.01 |
+14:32:17.8 |
HIP 17726 |
17.38 |
| 2026-04-04 00:00 |
03:48:43.07 |
+14:32:24.1 |
HIP 17726 |
17.84 |
| 2026-04-04 12:00 |
03:48:45.14 |
+14:32:30.4 |
HIP 17726 |
18.30 |
| 2026-04-05 00:00 |
03:48:47.23 |
+14:32:36.7 |
HIP 17726 |
18.77 |
| 2026-04-05 12:00 |
03:48:49.34 |
+14:32:43.1 |
HIP 17726 |
19.25 |
| 2026-04-06 00:00 |
03:48:51.46 |
+14:32:49.5 |
HIP 17726 |
19.73 |
| 2026-04-06 12:00 |
03:48:53.60 |
+14:32:55.9 |
HIP 17726 |
20.22 |
| 2026-04-07 00:00 |
03:48:55.76 |
+14:33:02.4 |
HIP 17726 |
20.71 |
| 2026-04-07 12:00 |
03:48:57.93 |
+14:33:08.8 |
HIP 17726 |
21.21 |
| 2026-04-08 00:00 |
03:49:00.11 |
+14:33:15.3 |
HIP 17726 |
21.72 |
| 2026-04-08 12:00 |
03:49:02.31 |
+14:33:21.8 |
HIP 17726 |
22.22 |
| 2026-04-09 00:00 |
03:49:04.53 |
+14:33:28.4 |
HIP 17726 |
22.74 |
| 2026-04-09 12:00 |
03:49:06.76 |
+14:33:34.9 |
HIP 17726 |
23.26 |
| 2026-04-10 00:00 |
03:49:09.00 |
+14:33:41.5 |
HIP 17726 |
23.78 |
| 2026-04-10 12:00 |
03:49:11.26 |
+14:33:48.1 |
HIP 17726 |
24.31 |
| 2026-04-11 00:00 |
03:49:13.54 |
+14:33:54.7 |
HIP 17726 |
24.84 |
| 2026-04-11 12:00 |
03:49:15.83 |
+14:34:01.3 |
HIP 17836 |
24.89 |
| 2026-04-12 00:00 |
03:49:18.13 |
+14:34:08.0 |
HIP 17836 |
24.89 |
| 2026-04-12 12:00 |
03:49:20.45 |
+14:34:14.7 |
HIP 17836 |
24.89 |
| 2026-04-13 00:00 |
03:49:22.78 |
+14:34:21.3 |
HIP 17836 |
24.91 |
| 2026-04-13 12:00 |
03:49:25.13 |
+14:34:28.0 |
HIP 17836 |
24.95 |
| 2026-04-14 00:00 |
03:49:27.49 |
+14:34:34.8 |
HIP 17836 |
25.00 |
| 2026-04-14 12:00 |
03:49:29.86 |
+14:34:41.5 |
HIP 17836 |
25.06 |
| 2026-04-15 00:00 |
03:49:32.25 |
+14:34:48.2 |
HIP 17836 |
25.14 |
| 2026-04-15 12:00 |
03:49:34.65 |
+14:34:55.0 |
HIP 17836 |
25.23 |
| 2026-04-16 00:00 |
03:49:37.06 |
+14:35:01.7 |
HIP 17836 |
25.33 |