메타데이터
| 항목 |
값 |
| Designation |
C/2002 K1 (NEAT) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-06-16T10:53:15.109440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:15Z |
| Obs used |
72 |
| NEO |
- |
| M1 |
11.400 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2002-06-23.0000000 |
| e |
0.99963588 |
| q (au) |
3.230234 |
| a (au) |
8871.406661 |
| i (deg) |
89.721779 |
| Ω (om, deg) |
280.548361 |
| ω (w, deg) |
4.460611 |
| M (ma, deg) |
0.000008 |
밝기
산란 + 전체 선형
$$
M_a = (12.814 + 2.141\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.814 |
| n |
2.141 |
| gf |
1.000 |
| gb |
-0.502 |
| 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) |
| 2026-09-20 00:00 |
07:05:10.14 |
+49:28:16.4 |
HIP 34333 |
17.99 |
| 2026-09-20 12:00 |
07:05:11.29 |
+49:28:30.2 |
HIP 34333 |
17.80 |
| 2026-09-21 00:00 |
07:05:12.41 |
+49:28:44.1 |
HIP 34333 |
17.62 |
| 2026-09-21 12:00 |
07:05:13.50 |
+49:28:58.1 |
HIP 34333 |
17.46 |
| 2026-09-22 00:00 |
07:05:14.55 |
+49:29:12.2 |
HIP 34333 |
17.29 |
| 2026-09-22 12:00 |
07:05:15.57 |
+49:29:26.3 |
HIP 34333 |
17.14 |
| 2026-09-23 00:00 |
07:05:16.55 |
+49:29:40.5 |
HIP 34333 |
17.00 |
| 2026-09-23 12:00 |
07:05:17.51 |
+49:29:54.8 |
HIP 34333 |
16.87 |
| 2026-09-24 00:00 |
07:05:18.43 |
+49:30:09.2 |
HIP 34333 |
16.74 |
| 2026-09-24 12:00 |
07:05:19.31 |
+49:30:23.6 |
HIP 34333 |
16.63 |
| 2026-09-25 00:00 |
07:05:20.17 |
+49:30:38.1 |
HIP 34333 |
16.52 |
| 2026-09-25 12:00 |
07:05:20.99 |
+49:30:52.7 |
HIP 34333 |
16.43 |
| 2026-09-26 00:00 |
07:05:21.77 |
+49:31:07.4 |
HIP 34333 |
16.34 |
| 2026-09-26 12:00 |
07:05:22.53 |
+49:31:22.1 |
HIP 34333 |
16.27 |
| 2026-09-27 00:00 |
07:05:23.24 |
+49:31:36.9 |
HIP 34333 |
16.20 |
| 2026-09-27 12:00 |
07:05:23.93 |
+49:31:51.8 |
HIP 34333 |
16.14 |
| 2026-09-28 00:00 |
07:05:24.58 |
+49:32:06.7 |
HIP 34333 |
16.10 |
| 2026-09-28 12:00 |
07:05:25.20 |
+49:32:21.7 |
HIP 34333 |
16.06 |
| 2026-09-29 00:00 |
07:05:25.78 |
+49:32:36.7 |
HIP 34333 |
16.04 |
| 2026-09-29 12:00 |
07:05:26.33 |
+49:32:51.9 |
HIP 34333 |
16.02 |
| 2026-09-30 00:00 |
07:05:26.84 |
+49:33:07.1 |
HIP 34333 |
16.01 |
| 2026-09-30 12:00 |
07:05:27.32 |
+49:33:22.3 |
HIP 34333 |
16.02 |
| 2026-10-01 00:00 |
07:05:27.77 |
+49:33:37.6 |
HIP 34333 |
16.03 |
| 2026-10-01 12:00 |
07:05:28.18 |
+49:33:53.0 |
HIP 34333 |
16.06 |
| 2026-10-02 00:00 |
07:05:28.55 |
+49:34:08.4 |
HIP 34333 |
16.09 |
| 2026-10-02 12:00 |
07:05:28.90 |
+49:34:23.9 |
HIP 34333 |
16.13 |
| 2026-10-03 00:00 |
07:05:29.20 |
+49:34:39.4 |
HIP 34333 |
16.19 |
| 2026-10-03 12:00 |
07:05:29.47 |
+49:34:55.0 |
HIP 34333 |
16.25 |
| 2026-10-04 00:00 |
07:05:29.71 |
+49:35:10.7 |
HIP 34333 |
16.32 |
| 2026-10-04 12:00 |
07:05:29.91 |
+49:35:26.4 |
HIP 34333 |
16.41 |
| 2026-10-05 00:00 |
07:05:30.08 |
+49:35:42.1 |
HIP 34333 |
16.50 |
| 2026-10-05 12:00 |
07:05:30.21 |
+49:35:57.9 |
HIP 34333 |
16.60 |
| 2026-10-06 00:00 |
07:05:30.31 |
+49:36:13.8 |
HIP 34333 |
16.71 |
| 2026-10-06 12:00 |
07:05:30.37 |
+49:36:29.7 |
HIP 34333 |
16.83 |
| 2026-10-07 00:00 |
07:05:30.39 |
+49:36:45.6 |
HIP 34333 |
16.96 |
| 2026-10-07 12:00 |
07:05:30.38 |
+49:37:01.6 |
HIP 34333 |
17.09 |
| 2026-10-08 00:00 |
07:05:30.33 |
+49:37:17.6 |
HIP 34333 |
17.24 |
| 2026-10-08 12:00 |
07:05:30.25 |
+49:37:33.7 |
HIP 34333 |
17.39 |
| 2026-10-09 00:00 |
07:05:30.13 |
+49:37:49.8 |
HIP 34333 |
17.55 |
| 2026-10-09 12:00 |
07:05:29.98 |
+49:38:06.0 |
HIP 34333 |
17.72 |
| 2026-10-10 00:00 |
07:05:29.79 |
+49:38:22.2 |
HIP 34333 |
17.89 |
| 2026-10-10 12:00 |
07:05:29.57 |
+49:38:38.4 |
HIP 34333 |
18.08 |
| 2026-10-11 00:00 |
07:05:29.31 |
+49:38:54.7 |
HIP 34333 |
18.27 |