메타데이터
| 항목 |
값 |
| Designation |
C/2020 K5 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2021-06-05T14:17:47.019840Z |
| Orbit solution date (soln_date, UTC) |
2022-07-19T01:12:39Z |
| Obs used |
95 |
| NEO |
- |
| M1 |
15.100 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2020-05-25T12:10:42.297600Z |
| Discovery magnitude (MPC) |
20.79 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-08-26.0000000 |
| e |
1.00134161 |
| q (au) |
1.535413 |
| a (au) |
-1144.452658 |
| i (deg) |
67.161983 |
| Ω (om, deg) |
86.163539 |
| ω (w, deg) |
249.602889 |
| M (ma, deg) |
-0.007219 |
밝기
산란 + 전체 선형
$$
M_a = (14.860 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.860 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.998 |
| 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) |
| 2026-07-29 00:00 |
07:07:10.12 |
+50:56:20.1 |
HIP 34451 |
28.91 |
| 2026-07-29 12:00 |
07:07:21.39 |
+50:56:39.5 |
HIP 34451 |
27.89 |
| 2026-07-30 00:00 |
07:07:32.64 |
+50:56:59.2 |
HIP 34451 |
26.95 |
| 2026-07-30 12:00 |
07:07:43.85 |
+50:57:19.2 |
HIP 34451 |
26.09 |
| 2026-07-31 00:00 |
07:07:55.03 |
+50:57:39.7 |
HIP 34451 |
25.33 |
| 2026-07-31 12:00 |
07:08:06.18 |
+50:58:00.5 |
HIP 34451 |
24.66 |
| 2026-08-01 00:00 |
07:08:17.29 |
+50:58:21.7 |
HIP 34451 |
24.10 |
| 2026-08-01 12:00 |
07:08:28.38 |
+50:58:43.3 |
HIP 34451 |
23.66 |
| 2026-08-02 00:00 |
07:08:39.42 |
+50:59:05.2 |
HIP 34451 |
23.34 |
| 2026-08-02 12:00 |
07:08:50.44 |
+50:59:27.5 |
HIP 34451 |
23.14 |
| 2026-08-03 00:00 |
07:09:01.42 |
+50:59:50.2 |
HIP 34451 |
23.07 |
| 2026-08-03 12:00 |
07:09:12.36 |
+51:00:13.2 |
HIP 34451 |
23.12 |
| 2026-08-04 00:00 |
07:09:23.27 |
+51:00:36.6 |
HIP 34451 |
23.30 |
| 2026-08-04 12:00 |
07:09:34.14 |
+51:01:00.4 |
HIP 34451 |
23.60 |
| 2026-08-05 00:00 |
07:09:44.97 |
+51:01:24.6 |
HIP 34451 |
24.02 |
| 2026-08-05 12:00 |
07:09:55.77 |
+51:01:49.2 |
HIP 34451 |
24.54 |
| 2026-08-06 00:00 |
07:10:06.53 |
+51:02:14.1 |
HIP 34451 |
25.17 |
| 2026-08-06 12:00 |
07:10:17.25 |
+51:02:39.4 |
HIP 34451 |
25.88 |
| 2026-08-07 00:00 |
07:10:27.93 |
+51:03:05.1 |
HIP 34451 |
26.68 |
| 2026-08-07 12:00 |
07:10:38.57 |
+51:03:31.1 |
HIP 34451 |
27.56 |
| 2026-08-08 00:00 |
07:10:49.17 |
+51:03:57.5 |
HIP 34451 |
28.51 |
| 2026-08-08 12:00 |
07:10:59.73 |
+51:04:24.3 |
HIP 34451 |
29.51 |
| 2026-08-09 00:00 |
07:11:10.24 |
+51:04:51.5 |
HIP 34912 |
29.48 |
| 2026-08-09 12:00 |
07:11:20.72 |
+51:05:19.1 |
HIP 34912 |
28.01 |
| 2026-08-10 00:00 |
07:11:31.15 |
+51:05:47.0 |
HIP 34912 |
26.57 |
| 2026-08-10 12:00 |
07:11:41.53 |
+51:06:15.3 |
HIP 34912 |
25.16 |
| 2026-08-11 00:00 |
07:11:51.87 |
+51:06:44.0 |
HIP 34912 |
23.78 |
| 2026-08-11 12:00 |
07:12:02.17 |
+51:07:13.1 |
HIP 34912 |
22.44 |
| 2026-08-12 00:00 |
07:12:12.42 |
+51:07:42.6 |
HIP 34912 |
21.16 |
| 2026-08-12 12:00 |
07:12:22.63 |
+51:08:12.4 |
HIP 34912 |
19.93 |
| 2026-08-13 00:00 |
07:12:32.78 |
+51:08:42.6 |
HIP 34912 |
18.76 |
| 2026-08-13 12:00 |
07:12:42.89 |
+51:09:13.2 |
HIP 34912 |
17.68 |
| 2026-08-14 00:00 |
07:12:52.96 |
+51:09:44.2 |
HIP 34963 |
16.58 |
| 2026-08-14 12:00 |
07:13:02.97 |
+51:10:15.5 |
HIP 34963 |
15.18 |
| 2026-08-15 00:00 |
07:13:12.93 |
+51:10:47.2 |
HIP 34963 |
13.84 |
| 2026-08-15 12:00 |
07:13:22.84 |
+51:11:19.3 |
HIP 34963 |
12.57 |
| 2026-08-16 00:00 |
07:13:32.71 |
+51:11:51.8 |
HIP 34963 |
11.39 |
| 2026-08-16 12:00 |
07:13:42.52 |
+51:12:24.7 |
HIP 34963 |
10.34 |
| 2026-08-17 00:00 |
07:13:52.28 |
+51:12:57.9 |
HIP 34963 |
9.44 |
| 2026-08-17 12:00 |
07:14:01.98 |
+51:13:31.5 |
HIP 34963 |
8.75 |
| 2026-08-18 00:00 |
07:14:11.64 |
+51:14:05.5 |
HIP 34963 |
8.31 |
| 2026-08-18 12:00 |
07:14:21.24 |
+51:14:39.8 |
HIP 34963 |
8.17 |
| 2026-08-19 00:00 |
07:14:30.79 |
+51:15:14.6 |
HIP 34963 |
8.32 |