메타데이터
| 항목 |
값 |
| Designation |
C/2019 K6 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2020-05-20T00:32:38.981760Z |
| Orbit solution date (soln_date, UTC) |
2022-01-05T13:06:41Z |
| Obs used |
360 |
| NEO |
- |
| M1 |
9.600 |
| K1 |
11.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-05-31T13:20:54.816000Z |
| Discovery magnitude (MPC) |
21.10 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-08-12.0000000 |
| e |
0.99756459 |
| q (au) |
3.928974 |
| a (au) |
1613.267974 |
| i (deg) |
132.394317 |
| Ω (om, deg) |
42.926027 |
| ω (w, deg) |
187.578586 |
| M (ma, deg) |
359.995710 |
밝기
산란 + 전체 선형
$$
M_a = (6.462 + 5.788\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.462 |
| n |
5.788 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2019-05-07 |
2020-05-14 |
+1.2378 |
-0.912 |
| 2020-05-21 |
2021-03-13 |
+7.1303 |
-3.375 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
05:37:08.07 |
-10:32:34.7 |
HIP 26349 |
7.81 |
| 2026-06-01 12:00 |
05:37:13.96 |
-10:32:07.1 |
HIP 26349 |
9.07 |
| 2026-06-02 00:00 |
05:37:19.87 |
-10:31:40.0 |
HIP 26349 |
10.40 |
| 2026-06-02 12:00 |
05:37:25.78 |
-10:31:13.4 |
HIP 26349 |
11.78 |
| 2026-06-03 00:00 |
05:37:31.71 |
-10:30:47.2 |
HIP 26349 |
13.19 |
| 2026-06-03 12:00 |
05:37:37.65 |
-10:30:21.6 |
HIP 26349 |
14.63 |
| 2026-06-04 00:00 |
05:37:43.60 |
-10:29:56.5 |
HIP 26349 |
16.09 |
| 2026-06-04 12:00 |
05:37:49.55 |
-10:29:31.8 |
HIP 26349 |
17.56 |
| 2026-06-05 00:00 |
05:37:55.52 |
-10:29:07.6 |
HIP 26349 |
19.04 |
| 2026-06-05 12:00 |
05:38:01.49 |
-10:28:43.9 |
HIP 26349 |
20.52 |
| 2026-06-06 00:00 |
05:38:07.48 |
-10:28:20.7 |
HIP 26349 |
22.02 |
| 2026-06-06 12:00 |
05:38:13.47 |
-10:27:58.0 |
HIP 26349 |
23.51 |
| 2026-06-07 00:00 |
05:38:19.47 |
-10:27:35.8 |
HIP 26349 |
25.02 |
| 2026-06-07 12:00 |
05:38:25.47 |
-10:27:14.1 |
HIP 26349 |
26.52 |
| 2026-06-08 00:00 |
05:38:31.48 |
-10:26:52.9 |
HIP 26349 |
28.03 |
| 2026-06-08 12:00 |
05:38:37.50 |
-10:26:32.1 |
HIP 26670 |
27.66 |
| 2026-06-09 00:00 |
05:38:43.52 |
-10:26:11.9 |
HIP 26704 |
26.40 |
| 2026-06-09 12:00 |
05:38:49.55 |
-10:25:52.1 |
HIP 26704 |
24.92 |
| 2026-06-10 00:00 |
05:38:55.59 |
-10:25:32.9 |
HIP 26704 |
23.44 |
| 2026-06-10 12:00 |
05:39:01.63 |
-10:25:14.1 |
HIP 26704 |
21.96 |
| 2026-06-11 00:00 |
05:39:07.67 |
-10:24:55.9 |
HIP 26704 |
20.49 |
| 2026-06-11 12:00 |
05:39:13.71 |
-10:24:38.1 |
HIP 26704 |
19.03 |
| 2026-06-12 00:00 |
05:39:19.76 |
-10:24:20.8 |
HIP 26704 |
17.57 |
| 2026-06-12 12:00 |
05:39:25.82 |
-10:24:04.0 |
HIP 26704 |
16.12 |
| 2026-06-13 00:00 |
05:39:31.87 |
-10:23:47.7 |
HIP 26704 |
14.68 |
| 2026-06-13 12:00 |
05:39:37.92 |
-10:23:32.0 |
HIP 26704 |
13.26 |
| 2026-06-14 00:00 |
05:39:43.98 |
-10:23:16.7 |
HIP 26704 |
11.85 |
| 2026-06-14 12:00 |
05:39:50.04 |
-10:23:01.9 |
HIP 26704 |
10.47 |
| 2026-06-15 00:00 |
05:39:56.10 |
-10:22:47.6 |
HIP 26704 |
9.13 |
| 2026-06-15 12:00 |
05:40:02.16 |
-10:22:33.8 |
HIP 26704 |
7.85 |
| 2026-06-16 00:00 |
05:40:08.21 |
-10:22:20.5 |
HIP 26704 |
6.66 |
| 2026-06-16 12:00 |
05:40:14.27 |
-10:22:07.7 |
HIP 26704 |
5.62 |
| 2026-06-17 00:00 |
05:40:20.32 |
-10:21:55.4 |
HIP 26704 |
4.82 |
| 2026-06-17 12:00 |
05:40:26.37 |
-10:21:43.6 |
HIP 26704 |
4.40 |
| 2026-06-18 00:00 |
05:40:32.42 |
-10:21:32.3 |
HIP 26704 |
4.46 |
| 2026-06-18 12:00 |
05:40:38.47 |
-10:21:21.4 |
HIP 26728 |
3.69 |
| 2026-06-19 00:00 |
05:40:44.51 |
-10:21:11.1 |
HIP 26728 |
3.36 |
| 2026-06-19 12:00 |
05:40:50.55 |
-10:21:01.3 |
HIP 26728 |
3.66 |
| 2026-06-20 00:00 |
05:40:56.58 |
-10:20:52.0 |
HIP 26728 |
4.46 |
| 2026-06-20 12:00 |
05:41:02.61 |
-10:20:43.1 |
HIP 26728 |
5.55 |
| 2026-06-21 00:00 |
05:41:08.64 |
-10:20:34.8 |
HIP 26728 |
6.78 |
| 2026-06-21 12:00 |
05:41:14.66 |
-10:20:26.9 |
HIP 26728 |
8.10 |
| 2026-06-22 00:00 |
05:41:20.67 |
-10:20:19.5 |
HIP 26728 |
9.46 |