메타데이터
| 항목 |
값 |
| Designation |
C/2019 K5 (Young) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2019-06-22T18:02:04.787520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:56Z |
| Obs used |
734 |
| NEO |
- |
| M1 |
12.100 |
| K1 |
9.500 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2019-05-25T14:10:08.054400Z |
| Discovery magnitude (MPC) |
17.10 o |
| Discovery observatory (MPC) |
T08 · ATLAS-MLO, Mauna Loa |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-09-13.0000000 |
| e |
0.98653488 |
| q (au) |
2.035047 |
| a (au) |
151.134694 |
| i (deg) |
15.315381 |
| Ω (om, deg) |
177.188411 |
| ω (w, deg) |
174.916616 |
| M (ma, deg) |
0.043630 |
밝기
산란 + 전체 선형
$$
M_a = (11.210 + 4.027\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.210 |
| n |
4.027 |
| gf |
1.000 |
| gb |
-0.801 |
| 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) |
| 2026-06-01 00:00 |
08:48:34.01 |
+07:20:24.1 |
HIP 43349 |
22.01 |
| 2026-06-01 12:00 |
08:48:37.82 |
+07:20:25.0 |
HIP 43349 |
21.21 |
| 2026-06-02 00:00 |
08:48:41.67 |
+07:20:25.7 |
HIP 43349 |
20.42 |
| 2026-06-02 12:00 |
08:48:45.56 |
+07:20:26.2 |
HIP 43349 |
19.64 |
| 2026-06-03 00:00 |
08:48:49.48 |
+07:20:26.4 |
HIP 43349 |
18.87 |
| 2026-06-03 12:00 |
08:48:53.45 |
+07:20:26.3 |
HIP 43349 |
18.12 |
| 2026-06-04 00:00 |
08:48:57.45 |
+07:20:26.0 |
HIP 43349 |
17.38 |
| 2026-06-04 12:00 |
08:49:01.50 |
+07:20:25.5 |
HIP 43349 |
16.67 |
| 2026-06-05 00:00 |
08:49:05.58 |
+07:20:24.7 |
HIP 43349 |
15.99 |
| 2026-06-05 12:00 |
08:49:09.69 |
+07:20:23.6 |
HIP 43349 |
15.34 |
| 2026-06-06 00:00 |
08:49:13.85 |
+07:20:22.3 |
HIP 43349 |
14.73 |
| 2026-06-06 12:00 |
08:49:18.04 |
+07:20:20.8 |
HIP 43349 |
14.16 |
| 2026-06-07 00:00 |
08:49:22.27 |
+07:20:19.0 |
HIP 43349 |
13.66 |
| 2026-06-07 12:00 |
08:49:26.54 |
+07:20:16.9 |
HIP 43349 |
13.21 |
| 2026-06-08 00:00 |
08:49:30.85 |
+07:20:14.6 |
HIP 43349 |
12.84 |
| 2026-06-08 12:00 |
08:49:35.19 |
+07:20:12.0 |
HIP 43349 |
12.55 |
| 2026-06-09 00:00 |
08:49:39.56 |
+07:20:09.2 |
HIP 43349 |
12.35 |
| 2026-06-09 12:00 |
08:49:43.97 |
+07:20:06.2 |
HIP 43349 |
12.25 |
| 2026-06-10 00:00 |
08:49:48.42 |
+07:20:02.9 |
HIP 43349 |
12.25 |
| 2026-06-10 12:00 |
08:49:52.90 |
+07:19:59.3 |
HIP 43349 |
12.35 |
| 2026-06-11 00:00 |
08:49:57.42 |
+07:19:55.5 |
HIP 43349 |
12.56 |
| 2026-06-11 12:00 |
08:50:01.97 |
+07:19:51.5 |
HIP 43349 |
12.87 |
| 2026-06-12 00:00 |
08:50:06.56 |
+07:19:47.2 |
HIP 43349 |
13.27 |
| 2026-06-12 12:00 |
08:50:11.18 |
+07:19:42.6 |
HIP 43349 |
13.76 |
| 2026-06-13 00:00 |
08:50:15.83 |
+07:19:37.8 |
HIP 43349 |
14.34 |
| 2026-06-13 12:00 |
08:50:20.52 |
+07:19:32.8 |
HIP 43349 |
14.99 |
| 2026-06-14 00:00 |
08:50:25.24 |
+07:19:27.5 |
HIP 43349 |
15.71 |
| 2026-06-14 12:00 |
08:50:30.00 |
+07:19:22.0 |
HIP 43349 |
16.49 |
| 2026-06-15 00:00 |
08:50:34.78 |
+07:19:16.2 |
HIP 43349 |
17.33 |
| 2026-06-15 12:00 |
08:50:39.60 |
+07:19:10.2 |
HIP 43349 |
18.21 |
| 2026-06-16 00:00 |
08:50:44.45 |
+07:19:03.9 |
HIP 43406 |
19.13 |
| 2026-06-16 12:00 |
08:50:49.33 |
+07:18:57.4 |
HIP 43406 |
19.50 |
| 2026-06-17 00:00 |
08:50:54.25 |
+07:18:50.6 |
HIP 43406 |
19.95 |
| 2026-06-17 12:00 |
08:50:59.19 |
+07:18:43.6 |
HIP 43406 |
20.47 |
| 2026-06-18 00:00 |
08:51:04.17 |
+07:18:36.4 |
HIP 43406 |
21.05 |
| 2026-06-18 12:00 |
08:51:09.17 |
+07:18:28.9 |
HIP 43406 |
21.69 |
| 2026-06-19 00:00 |
08:51:14.20 |
+07:18:21.2 |
HIP 43406 |
22.40 |
| 2026-06-19 12:00 |
08:51:19.27 |
+07:18:13.2 |
HIP 43406 |
23.15 |
| 2026-06-20 00:00 |
08:51:24.36 |
+07:18:05.0 |
HIP 43406 |
23.96 |
| 2026-06-20 12:00 |
08:51:29.48 |
+07:17:56.6 |
HIP 43406 |
24.81 |
| 2026-06-21 00:00 |
08:51:34.63 |
+07:17:47.9 |
HIP 43555 |
25.30 |
| 2026-06-21 12:00 |
08:51:39.81 |
+07:17:39.0 |
HIP 43555 |
24.69 |
| 2026-06-22 00:00 |
08:51:45.02 |
+07:17:29.9 |
HIP 43555 |
24.12 |