메타데이터
| 항목 |
값 |
| Designation |
C/2003 K1 (Spacewatch) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-12-21T03:39:15.825600Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:30Z |
| Obs used |
52 |
| NEO |
- |
| M1 |
14.100 |
| K1 |
8.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2003-05-30.0000000 |
| e |
0.95010346 |
| q (au) |
2.087130 |
| a (au) |
41.829157 |
| i (deg) |
129.831395 |
| Ω (om, deg) |
250.055839 |
| ω (w, deg) |
314.475766 |
| M (ma, deg) |
0.582360 |
밝기
산란 + 전체 선형
$$
M_a = (14.875 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.875 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-05-12 00:00 |
09:33:12.36 |
+61:24:08.1 |
HIP 46968 |
11.24 |
| 2026-05-12 12:00 |
09:33:11.99 |
+61:23:34.9 |
HIP 46968 |
11.65 |
| 2026-05-13 00:00 |
09:33:11.69 |
+61:23:01.7 |
HIP 46968 |
12.06 |
| 2026-05-13 12:00 |
09:33:11.43 |
+61:22:28.5 |
HIP 46968 |
12.49 |
| 2026-05-14 00:00 |
09:33:11.22 |
+61:21:55.1 |
HIP 46968 |
12.91 |
| 2026-05-14 12:00 |
09:33:11.07 |
+61:21:21.7 |
HIP 46968 |
13.35 |
| 2026-05-15 00:00 |
09:33:10.96 |
+61:20:48.2 |
HIP 46968 |
13.79 |
| 2026-05-15 12:00 |
09:33:10.91 |
+61:20:14.7 |
HIP 46968 |
14.24 |
| 2026-05-16 00:00 |
09:33:10.91 |
+61:19:41.1 |
HIP 46968 |
14.69 |
| 2026-05-16 12:00 |
09:33:10.95 |
+61:19:07.5 |
HIP 46968 |
15.14 |
| 2026-05-17 00:00 |
09:33:11.05 |
+61:18:33.8 |
HIP 46968 |
15.60 |
| 2026-05-17 12:00 |
09:33:11.20 |
+61:18:00.1 |
HIP 46968 |
16.07 |
| 2026-05-18 00:00 |
09:33:11.40 |
+61:17:26.3 |
HIP 46968 |
16.53 |
| 2026-05-18 12:00 |
09:33:11.66 |
+61:16:52.5 |
HIP 46968 |
17.01 |
| 2026-05-19 00:00 |
09:33:11.96 |
+61:16:18.6 |
HIP 46968 |
17.48 |
| 2026-05-19 12:00 |
09:33:12.31 |
+61:15:44.7 |
HIP 46968 |
17.96 |
| 2026-05-20 00:00 |
09:33:12.71 |
+61:15:10.8 |
HIP 46965 |
18.17 |
| 2026-05-20 12:00 |
09:33:13.16 |
+61:14:36.8 |
HIP 46965 |
17.64 |
| 2026-05-21 00:00 |
09:33:13.66 |
+61:14:02.8 |
HIP 46965 |
17.11 |
| 2026-05-21 12:00 |
09:33:14.21 |
+61:13:28.8 |
HIP 46965 |
16.59 |
| 2026-05-22 00:00 |
09:33:14.81 |
+61:12:54.7 |
HIP 46965 |
16.06 |
| 2026-05-22 12:00 |
09:33:15.46 |
+61:12:20.6 |
HIP 46965 |
15.53 |
| 2026-05-23 00:00 |
09:33:16.15 |
+61:11:46.5 |
HIP 46965 |
15.00 |
| 2026-05-23 12:00 |
09:33:16.90 |
+61:11:12.4 |
HIP 46965 |
14.47 |
| 2026-05-24 00:00 |
09:33:17.69 |
+61:10:38.3 |
HIP 46965 |
13.94 |
| 2026-05-24 12:00 |
09:33:18.53 |
+61:10:04.2 |
HIP 46965 |
13.41 |
| 2026-05-25 00:00 |
09:33:19.42 |
+61:09:30.0 |
HIP 46965 |
12.88 |
| 2026-05-25 12:00 |
09:33:20.36 |
+61:08:55.8 |
HIP 46965 |
12.35 |
| 2026-05-26 00:00 |
09:33:21.35 |
+61:08:21.7 |
HIP 46965 |
11.83 |
| 2026-05-26 12:00 |
09:33:22.38 |
+61:07:47.5 |
HIP 46965 |
11.30 |
| 2026-05-27 00:00 |
09:33:23.46 |
+61:07:13.3 |
HIP 46965 |
10.78 |
| 2026-05-27 12:00 |
09:33:24.59 |
+61:06:39.2 |
HIP 46965 |
10.26 |
| 2026-05-28 00:00 |
09:33:25.76 |
+61:06:05.0 |
HIP 46965 |
9.75 |
| 2026-05-28 12:00 |
09:33:26.98 |
+61:05:30.8 |
HIP 46965 |
9.24 |
| 2026-05-29 00:00 |
09:33:28.25 |
+61:04:56.7 |
HIP 46965 |
8.73 |
| 2026-05-29 12:00 |
09:33:29.57 |
+61:04:22.5 |
HIP 46965 |
8.23 |
| 2026-05-30 00:00 |
09:33:30.93 |
+61:03:48.4 |
HIP 46965 |
7.74 |
| 2026-05-30 12:00 |
09:33:32.33 |
+61:03:14.3 |
HIP 46965 |
7.27 |
| 2026-05-31 00:00 |
09:33:33.78 |
+61:02:40.1 |
HIP 46965 |
6.80 |
| 2026-05-31 12:00 |
09:33:35.28 |
+61:02:06.1 |
HIP 46965 |
6.35 |
| 2026-06-01 00:00 |
09:33:36.82 |
+61:01:32.0 |
HIP 46965 |
5.93 |
| 2026-06-01 12:00 |
09:33:38.41 |
+61:00:57.9 |
HIP 46965 |
5.53 |
| 2026-06-02 00:00 |
09:33:40.05 |
+61:00:23.9 |
HIP 46965 |
5.16 |