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) |
| 2026-07-29 00:00 |
08:59:04.70 |
+06:56:29.8 |
HIP 44178 |
17.02 |
| 2026-07-29 12:00 |
08:59:11.06 |
+06:56:06.0 |
HIP 44178 |
16.21 |
| 2026-07-30 00:00 |
08:59:17.42 |
+06:55:41.9 |
HIP 44178 |
15.52 |
| 2026-07-30 12:00 |
08:59:23.79 |
+06:55:17.8 |
HIP 44178 |
14.99 |
| 2026-07-31 00:00 |
08:59:30.15 |
+06:54:53.4 |
HIP 44178 |
14.62 |
| 2026-07-31 12:00 |
08:59:36.52 |
+06:54:29.0 |
HIP 44178 |
14.42 |
| 2026-08-01 00:00 |
08:59:42.89 |
+06:54:04.4 |
HIP 44178 |
14.42 |
| 2026-08-01 12:00 |
08:59:49.26 |
+06:53:39.6 |
HIP 44178 |
14.60 |
| 2026-08-02 00:00 |
08:59:55.64 |
+06:53:14.7 |
HIP 44178 |
14.96 |
| 2026-08-02 12:00 |
09:00:02.01 |
+06:52:49.7 |
HIP 44178 |
15.48 |
| 2026-08-03 00:00 |
09:00:08.38 |
+06:52:24.5 |
HIP 44178 |
16.16 |
| 2026-08-03 12:00 |
09:00:14.76 |
+06:51:59.2 |
HIP 44178 |
16.97 |
| 2026-08-04 00:00 |
09:00:21.13 |
+06:51:33.7 |
HIP 44178 |
17.90 |
| 2026-08-04 12:00 |
09:00:27.50 |
+06:51:08.1 |
HIP 44178 |
18.93 |
| 2026-08-05 00:00 |
09:00:33.87 |
+06:50:42.4 |
HIP 44178 |
20.03 |
| 2026-08-05 12:00 |
09:00:40.24 |
+06:50:16.5 |
HIP 44178 |
21.21 |
| 2026-08-06 00:00 |
09:00:46.60 |
+06:49:50.6 |
HIP 44178 |
22.45 |
| 2026-08-06 12:00 |
09:00:52.97 |
+06:49:24.4 |
HIP 44178 |
23.74 |
| 2026-08-07 00:00 |
09:00:59.33 |
+06:48:58.2 |
HIP 44341 |
22.52 |
| 2026-08-07 12:00 |
09:01:05.69 |
+06:48:31.8 |
HIP 44341 |
21.34 |
| 2026-08-08 00:00 |
09:01:12.05 |
+06:48:05.3 |
HIP 44341 |
20.22 |
| 2026-08-08 12:00 |
09:01:18.40 |
+06:47:38.7 |
HIP 44341 |
19.18 |
| 2026-08-09 00:00 |
09:01:24.75 |
+06:47:11.9 |
HIP 44341 |
18.22 |
| 2026-08-09 12:00 |
09:01:31.09 |
+06:46:45.1 |
HIP 44341 |
17.35 |
| 2026-08-10 00:00 |
09:01:37.43 |
+06:46:18.1 |
HIP 44341 |
16.61 |
| 2026-08-10 12:00 |
09:01:43.77 |
+06:45:51.0 |
HIP 44341 |
16.00 |
| 2026-08-11 00:00 |
09:01:50.10 |
+06:45:23.7 |
HIP 44341 |
15.53 |
| 2026-08-11 12:00 |
09:01:56.42 |
+06:44:56.4 |
HIP 44341 |
15.22 |
| 2026-08-12 00:00 |
09:02:02.74 |
+06:44:29.0 |
HIP 44341 |
15.09 |
| 2026-08-12 12:00 |
09:02:09.05 |
+06:44:01.4 |
HIP 44341 |
15.12 |
| 2026-08-13 00:00 |
09:02:15.36 |
+06:43:33.7 |
HIP 44341 |
15.33 |
| 2026-08-13 12:00 |
09:02:21.65 |
+06:43:05.9 |
HIP 44437 |
14.39 |
| 2026-08-14 00:00 |
09:02:27.94 |
+06:42:38.1 |
HIP 44437 |
13.20 |
| 2026-08-14 12:00 |
09:02:34.22 |
+06:42:10.1 |
HIP 44437 |
12.11 |
| 2026-08-15 00:00 |
09:02:40.50 |
+06:41:42.0 |
HIP 44437 |
11.15 |
| 2026-08-15 12:00 |
09:02:46.76 |
+06:41:13.8 |
HIP 44437 |
10.37 |
| 2026-08-16 00:00 |
09:02:53.02 |
+06:40:45.5 |
HIP 44437 |
9.80 |
| 2026-08-16 12:00 |
09:02:59.26 |
+06:40:17.1 |
HIP 44437 |
9.47 |
| 2026-08-17 00:00 |
09:03:05.50 |
+06:39:48.7 |
HIP 44437 |
9.42 |
| 2026-08-17 12:00 |
09:03:11.73 |
+06:39:20.1 |
HIP 44437 |
9.65 |
| 2026-08-18 00:00 |
09:03:17.94 |
+06:38:51.4 |
HIP 44437 |
10.13 |
| 2026-08-18 12:00 |
09:03:24.15 |
+06:38:22.7 |
HIP 44437 |
10.84 |
| 2026-08-19 00:00 |
09:03:30.34 |
+06:37:53.9 |
HIP 44437 |
11.73 |