메타데이터
| 항목 |
값 |
| Designation |
C/2002 K2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-01-05T20:02:48.010560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:16Z |
| Obs used |
136 |
| NEO |
- |
| M1 |
7.500 |
| K1 |
11.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2002-06-25.0000000 |
| e |
0.99313694 |
| q (au) |
5.235061 |
| a (au) |
762.787805 |
| i (deg) |
130.895647 |
| Ω (om, deg) |
294.556678 |
| ω (w, deg) |
26.665091 |
| M (ma, deg) |
0.007961 |
밝기
산란 + 전체 선형
$$
M_a = (8.268 + 3.515\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.268 |
| n |
3.515 |
| gf |
0.999 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
9.997 |
| 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) |
| 2026-09-20 00:00 |
08:38:50.63 |
+28:54:05.3 |
HIP 42514 |
28.20 |
| 2026-09-20 12:00 |
08:38:52.33 |
+28:54:02.9 |
HIP 42514 |
28.01 |
| 2026-09-21 00:00 |
08:38:54.02 |
+28:54:00.6 |
HIP 42514 |
27.84 |
| 2026-09-21 12:00 |
08:38:55.68 |
+28:53:58.4 |
HIP 42514 |
27.66 |
| 2026-09-22 00:00 |
08:38:57.33 |
+28:53:56.4 |
HIP 42514 |
27.50 |
| 2026-09-22 12:00 |
08:38:58.95 |
+28:53:54.4 |
HIP 42514 |
27.33 |
| 2026-09-23 00:00 |
08:39:00.55 |
+28:53:52.5 |
HIP 42514 |
27.17 |
| 2026-09-23 12:00 |
08:39:02.14 |
+28:53:50.7 |
HIP 42514 |
27.02 |
| 2026-09-24 00:00 |
08:39:03.70 |
+28:53:49.1 |
HIP 42514 |
26.87 |
| 2026-09-24 12:00 |
08:39:05.25 |
+28:53:47.5 |
HIP 42514 |
26.72 |
| 2026-09-25 00:00 |
08:39:06.77 |
+28:53:46.1 |
HIP 42514 |
26.58 |
| 2026-09-25 12:00 |
08:39:08.28 |
+28:53:44.8 |
HIP 42514 |
26.44 |
| 2026-09-26 00:00 |
08:39:09.76 |
+28:53:43.5 |
HIP 42514 |
26.30 |
| 2026-09-26 12:00 |
08:39:11.22 |
+28:53:42.4 |
HIP 42514 |
26.17 |
| 2026-09-27 00:00 |
08:39:12.66 |
+28:53:41.4 |
HIP 42514 |
26.05 |
| 2026-09-27 12:00 |
08:39:14.08 |
+28:53:40.5 |
HIP 42514 |
25.92 |
| 2026-09-28 00:00 |
08:39:15.48 |
+28:53:39.7 |
HIP 42514 |
25.80 |
| 2026-09-28 12:00 |
08:39:16.86 |
+28:53:39.0 |
HIP 42514 |
25.69 |
| 2026-09-29 00:00 |
08:39:18.21 |
+28:53:38.4 |
HIP 42514 |
25.57 |
| 2026-09-29 12:00 |
08:39:19.55 |
+28:53:37.9 |
HIP 42514 |
25.46 |
| 2026-09-30 00:00 |
08:39:20.86 |
+28:53:37.5 |
HIP 42514 |
25.35 |
| 2026-09-30 12:00 |
08:39:22.15 |
+28:53:37.2 |
HIP 42514 |
25.25 |
| 2026-10-01 00:00 |
08:39:23.42 |
+28:53:37.1 |
HIP 42514 |
25.15 |
| 2026-10-01 12:00 |
08:39:24.67 |
+28:53:37.0 |
HIP 42514 |
25.05 |
| 2026-10-02 00:00 |
08:39:25.89 |
+28:53:37.1 |
HIP 42514 |
24.96 |
| 2026-10-02 12:00 |
08:39:27.10 |
+28:53:37.2 |
HIP 42514 |
24.86 |
| 2026-10-03 00:00 |
08:39:28.28 |
+28:53:37.5 |
HIP 42514 |
24.77 |
| 2026-10-03 12:00 |
08:39:29.44 |
+28:53:37.9 |
HIP 42514 |
24.68 |
| 2026-10-04 00:00 |
08:39:30.57 |
+28:53:38.4 |
HIP 42514 |
24.60 |
| 2026-10-04 12:00 |
08:39:31.68 |
+28:53:39.0 |
HIP 42514 |
24.51 |
| 2026-10-05 00:00 |
08:39:32.77 |
+28:53:39.7 |
HIP 42514 |
24.43 |
| 2026-10-05 12:00 |
08:39:33.84 |
+28:53:40.5 |
HIP 42514 |
24.35 |
| 2026-10-06 00:00 |
08:39:34.88 |
+28:53:41.4 |
HIP 42514 |
24.27 |
| 2026-10-06 12:00 |
08:39:35.90 |
+28:53:42.4 |
HIP 42514 |
24.19 |
| 2026-10-07 00:00 |
08:39:36.90 |
+28:53:43.5 |
HIP 42514 |
24.11 |
| 2026-10-07 12:00 |
08:39:37.87 |
+28:53:44.8 |
HIP 42514 |
24.04 |
| 2026-10-08 00:00 |
08:39:38.82 |
+28:53:46.1 |
HIP 42514 |
23.96 |
| 2026-10-08 12:00 |
08:39:39.74 |
+28:53:47.6 |
HIP 42577 |
23.88 |
| 2026-10-09 00:00 |
08:39:40.65 |
+28:53:49.1 |
HIP 42577 |
23.79 |
| 2026-10-09 12:00 |
08:39:41.52 |
+28:53:50.8 |
HIP 42577 |
23.70 |
| 2026-10-10 00:00 |
08:39:42.38 |
+28:53:52.6 |
HIP 42577 |
23.62 |
| 2026-10-10 12:00 |
08:39:43.20 |
+28:53:54.5 |
HIP 42577 |
23.54 |
| 2026-10-11 00:00 |
08:39:44.01 |
+28:53:56.5 |
HIP 42577 |
23.47 |