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) |
| 2026-09-20 00:00 |
03:58:19.28 |
+14:34:56.6 |
HIP 18551 |
23.78 |
| 2026-09-20 12:00 |
03:58:18.12 |
+14:34:46.1 |
HIP 18551 |
23.59 |
| 2026-09-21 00:00 |
03:58:16.94 |
+14:34:35.6 |
HIP 18551 |
23.40 |
| 2026-09-21 12:00 |
03:58:15.73 |
+14:34:24.9 |
HIP 18551 |
23.21 |
| 2026-09-22 00:00 |
03:58:14.50 |
+14:34:14.3 |
HIP 18551 |
23.03 |
| 2026-09-22 12:00 |
03:58:13.25 |
+14:34:03.5 |
HIP 18551 |
22.84 |
| 2026-09-23 00:00 |
03:58:11.97 |
+14:33:52.8 |
HIP 18551 |
22.67 |
| 2026-09-23 12:00 |
03:58:10.68 |
+14:33:41.9 |
HIP 18551 |
22.49 |
| 2026-09-24 00:00 |
03:58:09.36 |
+14:33:31.1 |
HIP 18551 |
22.32 |
| 2026-09-24 12:00 |
03:58:08.02 |
+14:33:20.1 |
HIP 18551 |
22.15 |
| 2026-09-25 00:00 |
03:58:06.66 |
+14:33:09.2 |
HIP 18551 |
21.99 |
| 2026-09-25 12:00 |
03:58:05.28 |
+14:32:58.1 |
HIP 18551 |
21.84 |
| 2026-09-26 00:00 |
03:58:03.87 |
+14:32:47.1 |
HIP 18551 |
21.68 |
| 2026-09-26 12:00 |
03:58:02.45 |
+14:32:36.0 |
HIP 18551 |
21.54 |
| 2026-09-27 00:00 |
03:58:01.00 |
+14:32:24.8 |
HIP 18551 |
21.40 |
| 2026-09-27 12:00 |
03:57:59.54 |
+14:32:13.6 |
HIP 18551 |
21.26 |
| 2026-09-28 00:00 |
03:57:58.05 |
+14:32:02.4 |
HIP 18551 |
21.14 |
| 2026-09-28 12:00 |
03:57:56.54 |
+14:31:51.1 |
HIP 18551 |
21.02 |
| 2026-09-29 00:00 |
03:57:55.01 |
+14:31:39.7 |
HIP 18551 |
20.91 |
| 2026-09-29 12:00 |
03:57:53.46 |
+14:31:28.3 |
HIP 18551 |
20.80 |
| 2026-09-30 00:00 |
03:57:51.89 |
+14:31:16.9 |
HIP 18551 |
20.71 |
| 2026-09-30 12:00 |
03:57:50.30 |
+14:31:05.5 |
HIP 18551 |
20.62 |
| 2026-10-01 00:00 |
03:57:48.69 |
+14:30:53.9 |
HIP 18551 |
20.55 |
| 2026-10-01 12:00 |
03:57:47.05 |
+14:30:42.4 |
HIP 18551 |
20.48 |
| 2026-10-02 00:00 |
03:57:45.40 |
+14:30:30.8 |
HIP 18551 |
20.43 |
| 2026-10-02 12:00 |
03:57:43.73 |
+14:30:19.2 |
HIP 18551 |
20.38 |
| 2026-10-03 00:00 |
03:57:42.04 |
+14:30:07.5 |
HIP 18551 |
20.35 |
| 2026-10-03 12:00 |
03:57:40.32 |
+14:29:55.8 |
HIP 18551 |
20.32 |
| 2026-10-04 00:00 |
03:57:38.59 |
+14:29:44.1 |
HIP 18551 |
20.31 |
| 2026-10-04 12:00 |
03:57:36.84 |
+14:29:32.3 |
HIP 18551 |
20.31 |
| 2026-10-05 00:00 |
03:57:35.07 |
+14:29:20.5 |
HIP 18551 |
20.32 |
| 2026-10-05 12:00 |
03:57:33.28 |
+14:29:08.6 |
HIP 18551 |
20.35 |
| 2026-10-06 00:00 |
03:57:31.46 |
+14:28:56.7 |
HIP 18551 |
20.39 |
| 2026-10-06 12:00 |
03:57:29.64 |
+14:28:44.8 |
HIP 18551 |
20.44 |
| 2026-10-07 00:00 |
03:57:27.79 |
+14:28:32.8 |
HIP 18551 |
20.50 |
| 2026-10-07 12:00 |
03:57:25.92 |
+14:28:20.8 |
HIP 18551 |
20.58 |
| 2026-10-08 00:00 |
03:57:24.03 |
+14:28:08.8 |
HIP 18551 |
20.68 |
| 2026-10-08 12:00 |
03:57:22.13 |
+14:27:56.7 |
HIP 18551 |
20.78 |
| 2026-10-09 00:00 |
03:57:20.20 |
+14:27:44.7 |
HIP 18551 |
20.90 |
| 2026-10-09 12:00 |
03:57:18.26 |
+14:27:32.5 |
HIP 18551 |
21.04 |
| 2026-10-10 00:00 |
03:57:16.30 |
+14:27:20.4 |
HIP 18551 |
21.18 |
| 2026-10-10 12:00 |
03:57:14.32 |
+14:27:08.2 |
HIP 18551 |
21.35 |
| 2026-10-11 00:00 |
03:57:12.33 |
+14:26:56.0 |
HIP 18551 |
21.52 |