메타데이터
| 항목 |
값 |
| Designation |
C/2007 K5 (Lovejoy) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-05-01T23:02:06.720000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:09Z |
| Obs used |
48 |
| NEO |
- |
| M1 |
12.000 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2007-06-15.0000000 |
| e |
0.97669348 |
| q (au) |
1.149171 |
| a (au) |
49.306854 |
| i (deg) |
64.883215 |
| Ω (om, deg) |
193.738734 |
| ω (w, deg) |
255.585000 |
| M (ma, deg) |
0.125370 |
밝기
산란 + 전체 선형
$$
M_a = (13.220 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.220 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.998 |
| k |
1.000 |
| 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) |
| 2026-06-01 00:00 |
16:02:52.20 |
+32:52:02.8 |
HIP 78576 |
19.00 |
| 2026-06-01 12:00 |
16:02:48.49 |
+32:52:04.4 |
HIP 78576 |
18.95 |
| 2026-06-02 00:00 |
16:02:44.78 |
+32:52:05.6 |
HIP 78576 |
18.94 |
| 2026-06-02 12:00 |
16:02:41.08 |
+32:52:06.5 |
HIP 78576 |
18.95 |
| 2026-06-03 00:00 |
16:02:37.39 |
+32:52:07.0 |
HIP 78576 |
18.99 |
| 2026-06-03 12:00 |
16:02:33.70 |
+32:52:07.2 |
HIP 78576 |
19.05 |
| 2026-06-04 00:00 |
16:02:30.02 |
+32:52:07.1 |
HIP 78576 |
19.14 |
| 2026-06-04 12:00 |
16:02:26.34 |
+32:52:06.6 |
HIP 78576 |
19.25 |
| 2026-06-05 00:00 |
16:02:22.67 |
+32:52:05.7 |
HIP 78576 |
19.39 |
| 2026-06-05 12:00 |
16:02:19.01 |
+32:52:04.5 |
HIP 78576 |
19.55 |
| 2026-06-06 00:00 |
16:02:15.36 |
+32:52:02.9 |
HIP 78576 |
19.73 |
| 2026-06-06 12:00 |
16:02:11.71 |
+32:52:01.0 |
HIP 78576 |
19.94 |
| 2026-06-07 00:00 |
16:02:08.07 |
+32:51:58.8 |
HIP 78576 |
20.16 |
| 2026-06-07 12:00 |
16:02:04.44 |
+32:51:56.2 |
HIP 78576 |
20.41 |
| 2026-06-08 00:00 |
16:02:00.82 |
+32:51:53.2 |
HIP 78576 |
20.68 |
| 2026-06-08 12:00 |
16:01:57.21 |
+32:51:49.9 |
HIP 78576 |
20.96 |
| 2026-06-09 00:00 |
16:01:53.61 |
+32:51:46.3 |
HIP 78576 |
21.26 |
| 2026-06-09 12:00 |
16:01:50.01 |
+32:51:42.3 |
HIP 78576 |
21.58 |
| 2026-06-10 00:00 |
16:01:46.43 |
+32:51:38.0 |
HIP 78576 |
21.92 |
| 2026-06-10 12:00 |
16:01:42.85 |
+32:51:33.3 |
HIP 78576 |
22.27 |
| 2026-06-11 00:00 |
16:01:39.29 |
+32:51:28.2 |
HIP 78576 |
22.63 |
| 2026-06-11 12:00 |
16:01:35.73 |
+32:51:22.9 |
HIP 78576 |
23.01 |
| 2026-06-12 00:00 |
16:01:32.19 |
+32:51:17.2 |
HIP 78576 |
23.39 |
| 2026-06-12 12:00 |
16:01:28.66 |
+32:51:11.1 |
HIP 78576 |
23.79 |
| 2026-06-13 00:00 |
16:01:25.14 |
+32:51:04.7 |
HIP 78576 |
24.21 |
| 2026-06-13 12:00 |
16:01:21.63 |
+32:50:57.9 |
HIP 78576 |
24.63 |
| 2026-06-14 00:00 |
16:01:18.14 |
+32:50:50.8 |
HIP 78576 |
25.06 |
| 2026-06-14 12:00 |
16:01:14.65 |
+32:50:43.4 |
HIP 78576 |
25.50 |
| 2026-06-15 00:00 |
16:01:11.18 |
+32:50:35.6 |
HIP 78576 |
25.94 |
| 2026-06-15 12:00 |
16:01:07.72 |
+32:50:27.5 |
HIP 78576 |
26.40 |
| 2026-06-16 00:00 |
16:01:04.28 |
+32:50:19.1 |
HIP 78576 |
26.86 |
| 2026-06-16 12:00 |
16:01:00.85 |
+32:50:10.3 |
HIP 78576 |
27.33 |
| 2026-06-17 00:00 |
16:00:57.43 |
+32:50:01.2 |
HIP 78576 |
27.80 |
| 2026-06-17 12:00 |
16:00:54.03 |
+32:49:51.7 |
HIP 78576 |
28.28 |
| 2026-06-18 00:00 |
16:00:50.64 |
+32:49:41.9 |
HIP 78459 |
28.74 |
| 2026-06-18 12:00 |
16:00:47.27 |
+32:49:31.8 |
HIP 78459 |
28.98 |
| 2026-06-19 00:00 |
16:00:43.91 |
+32:49:21.3 |
HIP 78459 |
29.24 |
| 2026-06-19 12:00 |
16:00:40.57 |
+32:49:10.5 |
HIP 78459 |
29.52 |
| 2026-06-20 00:00 |
16:00:37.24 |
+32:48:59.4 |
HIP 78459 |
29.82 |
| 2026-06-20 12:00 |
16:00:33.92 |
+32:48:48.0 |
HIP 78459 |
30.14 |
| 2026-06-21 00:00 |
16:00:30.63 |
+32:48:36.2 |
HIP 78459 |
30.48 |
| 2026-06-21 12:00 |
16:00:27.35 |
+32:48:24.1 |
HIP 78459 |
30.83 |
| 2026-06-22 00:00 |
16:00:24.09 |
+32:48:11.7 |
HIP 78459 |
31.20 |