메타데이터
| 항목 |
값 |
| Designation |
C/1998 K2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1998-09-01T05:31:38.231040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:53Z |
| Obs used |
201 |
| NEO |
- |
| M1 |
10.300 |
| K1 |
5.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1998-10-01.0000000 |
| e |
0.99927629 |
| q (au) |
2.323478 |
| a (au) |
3210.507001 |
| i (deg) |
64.456675 |
| Ω (om, deg) |
68.781077 |
| ω (w, deg) |
221.417912 |
| M (ma, deg) |
0.000161 |
밝기
산란 + 전체 선형
$$
M_a = (11.927 + 2.178\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.927 |
| n |
2.178 |
| gf |
1.000 |
| gb |
-0.601 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
04:51:07.67 |
+37:19:47.9 |
HIP 22453 |
17.33 |
| 2026-06-01 12:00 |
04:51:10.62 |
+37:19:52.7 |
HIP 22453 |
17.78 |
| 2026-06-02 00:00 |
04:51:13.57 |
+37:19:57.6 |
HIP 22453 |
18.24 |
| 2026-06-02 12:00 |
04:51:16.52 |
+37:20:02.6 |
HIP 22453 |
18.70 |
| 2026-06-03 00:00 |
04:51:19.48 |
+37:20:07.6 |
HIP 22453 |
19.17 |
| 2026-06-03 12:00 |
04:51:22.43 |
+37:20:12.7 |
HIP 22453 |
19.65 |
| 2026-06-04 00:00 |
04:51:25.39 |
+37:20:17.9 |
HIP 22453 |
20.13 |
| 2026-06-04 12:00 |
04:51:28.35 |
+37:20:23.2 |
HIP 22453 |
20.62 |
| 2026-06-05 00:00 |
04:51:31.30 |
+37:20:28.5 |
HIP 22453 |
21.12 |
| 2026-06-05 12:00 |
04:51:34.26 |
+37:20:33.9 |
HIP 22453 |
21.62 |
| 2026-06-06 00:00 |
04:51:37.22 |
+37:20:39.4 |
HIP 22453 |
22.12 |
| 2026-06-06 12:00 |
04:51:40.17 |
+37:20:44.9 |
HIP 22453 |
22.62 |
| 2026-06-07 00:00 |
04:51:43.13 |
+37:20:50.5 |
HIP 22453 |
23.13 |
| 2026-06-07 12:00 |
04:51:46.09 |
+37:20:56.2 |
HIP 22453 |
23.65 |
| 2026-06-08 00:00 |
04:51:49.04 |
+37:21:02.0 |
HIP 22453 |
24.16 |
| 2026-06-08 12:00 |
04:51:51.99 |
+37:21:07.8 |
HIP 22453 |
24.68 |
| 2026-06-09 00:00 |
04:51:54.95 |
+37:21:13.7 |
HIP 22453 |
25.21 |
| 2026-06-09 12:00 |
04:51:57.90 |
+37:21:19.6 |
HIP 22453 |
25.73 |
| 2026-06-10 00:00 |
04:52:00.85 |
+37:21:25.7 |
HIP 22453 |
26.26 |
| 2026-06-10 12:00 |
04:52:03.79 |
+37:21:31.8 |
HIP 22453 |
26.79 |
| 2026-06-11 00:00 |
04:52:06.74 |
+37:21:37.9 |
HIP 22453 |
27.32 |
| 2026-06-11 12:00 |
04:52:09.68 |
+37:21:44.2 |
HIP 22453 |
27.85 |
| 2026-06-12 00:00 |
04:52:12.62 |
+37:21:50.5 |
HIP 22453 |
28.38 |
| 2026-06-12 12:00 |
04:52:15.56 |
+37:21:56.8 |
HIP 22529 |
28.77 |
| 2026-06-13 00:00 |
04:52:18.50 |
+37:22:03.3 |
HIP 22529 |
29.01 |
| 2026-06-13 12:00 |
04:52:21.43 |
+37:22:09.8 |
HIP 22529 |
29.27 |
| 2026-06-14 00:00 |
04:52:24.36 |
+37:22:16.3 |
HIP 22529 |
29.53 |
| 2026-06-14 12:00 |
04:52:27.28 |
+37:22:23.0 |
HIP 22529 |
29.81 |
| 2026-06-15 00:00 |
04:52:30.20 |
+37:22:29.6 |
HIP 22529 |
30.08 |
| 2026-06-15 12:00 |
04:52:33.12 |
+37:22:36.4 |
HIP 22529 |
30.37 |
| 2026-06-16 00:00 |
04:52:36.04 |
+37:22:43.2 |
HIP 22529 |
30.67 |
| 2026-06-16 12:00 |
04:52:38.95 |
+37:22:50.1 |
HIP 22529 |
30.97 |
| 2026-06-17 00:00 |
04:52:41.85 |
+37:22:57.1 |
HIP 22529 |
31.28 |
| 2026-06-17 12:00 |
04:52:44.75 |
+37:23:04.1 |
HIP 22529 |
31.59 |
| 2026-06-18 00:00 |
04:52:47.65 |
+37:23:11.2 |
HIP 22529 |
31.91 |
| 2026-06-18 12:00 |
04:52:50.54 |
+37:23:18.3 |
HIP 22529 |
32.24 |
| 2026-06-19 00:00 |
04:52:53.42 |
+37:23:25.6 |
HIP 22529 |
32.57 |
| 2026-06-19 12:00 |
04:52:56.30 |
+37:23:32.8 |
HIP 22529 |
32.91 |
| 2026-06-20 00:00 |
04:52:59.18 |
+37:23:40.2 |
HIP 22529 |
33.25 |
| 2026-06-20 12:00 |
04:53:02.05 |
+37:23:47.5 |
HIP 22529 |
33.60 |
| 2026-06-21 00:00 |
04:53:04.91 |
+37:23:55.0 |
HIP 22529 |
33.96 |
| 2026-06-21 12:00 |
04:53:07.76 |
+37:24:02.5 |
HIP 22529 |
34.31 |
| 2026-06-22 00:00 |
04:53:10.61 |
+37:24:10.1 |
HIP 22529 |
34.68 |