메타데이터
| 항목 |
값 |
| Designation |
P/2019 X1 (Pruyne) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2019-07-22T09:51:42.183360Z |
| Orbit solution date (soln_date, UTC) |
2021-05-31T22:43:04Z |
| Obs used |
137 |
| NEO |
- |
| M1 |
10.500 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-12-02T08:46:47.712000Z |
| Discovery magnitude (MPC) |
19.40 G |
| Discovery observatory (MPC) |
G96 · University of Arizona Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-05-31.0000000 |
| e |
0.30260697 |
| q (au) |
4.305513 |
| a (au) |
6.173725 |
| i (deg) |
10.246545 |
| Ω (om, deg) |
43.727710 |
| ω (w, deg) |
36.929270 |
| M (ma, deg) |
356.632521 |
밝기
산란 + 전체 선형
$$
M_a = (16.134 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.134 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.701 |
| k |
0.800 |
| δ90 |
9.979 |
| 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 |
16:15:18.94 |
-26:16:55.3 |
HIP 79546 |
18.98 |
| 2026-09-20 12:00 |
16:15:29.19 |
-26:17:13.1 |
HIP 79546 |
21.27 |
| 2026-09-21 00:00 |
16:15:39.55 |
-26:17:31.2 |
HIP 79815 |
22.99 |
| 2026-09-21 12:00 |
16:15:50.01 |
-26:17:49.6 |
HIP 79815 |
20.63 |
| 2026-09-22 00:00 |
16:16:00.57 |
-26:18:08.2 |
HIP 79815 |
18.24 |
| 2026-09-22 12:00 |
16:16:11.24 |
-26:18:27.1 |
HIP 79815 |
15.83 |
| 2026-09-23 00:00 |
16:16:22.01 |
-26:18:46.3 |
HIP 79815 |
13.39 |
| 2026-09-23 12:00 |
16:16:32.88 |
-26:19:05.7 |
HIP 79815 |
10.93 |
| 2026-09-24 00:00 |
16:16:43.85 |
-26:19:25.4 |
HIP 79815 |
8.45 |
| 2026-09-24 12:00 |
16:16:54.92 |
-26:19:45.4 |
HIP 79815 |
5.95 |
| 2026-09-25 00:00 |
16:17:06.09 |
-26:20:05.6 |
HIP 79815 |
3.43 |
| 2026-09-25 12:00 |
16:17:17.37 |
-26:20:26.0 |
HIP 79815 |
0.88 |
| 2026-09-26 00:00 |
16:17:28.74 |
-26:20:46.8 |
HIP 79815 |
1.69 |
| 2026-09-26 12:00 |
16:17:40.21 |
-26:21:07.7 |
HIP 79815 |
4.29 |
| 2026-09-27 00:00 |
16:17:51.77 |
-26:21:28.9 |
HIP 79815 |
6.90 |
| 2026-09-27 12:00 |
16:18:03.44 |
-26:21:50.4 |
HIP 79815 |
9.54 |
| 2026-09-28 00:00 |
16:18:15.20 |
-26:22:12.1 |
HIP 79815 |
12.20 |
| 2026-09-28 12:00 |
16:18:27.06 |
-26:22:34.1 |
HIP 79815 |
14.88 |
| 2026-09-29 00:00 |
16:18:39.01 |
-26:22:56.2 |
HIP 79815 |
17.58 |
| 2026-09-29 12:00 |
16:18:51.06 |
-26:23:18.7 |
HIP 79815 |
20.31 |
| 2026-09-30 00:00 |
16:19:03.20 |
-26:23:41.3 |
HIP 79815 |
23.05 |
| 2026-09-30 12:00 |
16:19:15.44 |
-26:24:04.3 |
HIP 79815 |
25.82 |
| 2026-10-01 00:00 |
16:19:27.77 |
-26:24:27.4 |
HIP 79987 |
28.15 |
| 2026-10-01 12:00 |
16:19:40.19 |
-26:24:50.8 |
HIP 79987 |
27.67 |
| 2026-10-02 00:00 |
16:19:52.71 |
-26:25:14.4 |
HIP 79987 |
27.48 |
| 2026-10-02 12:00 |
16:20:05.32 |
-26:25:38.2 |
HIP 79987 |
27.57 |
| 2026-10-03 00:00 |
16:20:18.02 |
-26:26:02.3 |
HIP 79987 |
27.96 |
| 2026-10-03 12:00 |
16:20:30.81 |
-26:26:26.5 |
HIP 79987 |
28.63 |
| 2026-10-04 00:00 |
16:20:43.70 |
-26:26:51.0 |
HIP 79987 |
29.58 |
| 2026-10-04 12:00 |
16:20:56.67 |
-26:27:15.8 |
HIP 79987 |
30.78 |
| 2026-10-05 00:00 |
16:21:09.73 |
-26:27:40.7 |
HIP 80290 |
30.31 |
| 2026-10-05 12:00 |
16:21:22.88 |
-26:28:05.9 |
HIP 80290 |
27.51 |
| 2026-10-06 00:00 |
16:21:36.12 |
-26:28:31.3 |
HIP 80290 |
24.72 |
| 2026-10-06 12:00 |
16:21:49.45 |
-26:28:56.8 |
HIP 80290 |
21.97 |
| 2026-10-07 00:00 |
16:22:02.86 |
-26:29:22.6 |
HIP 80290 |
19.29 |
| 2026-10-07 12:00 |
16:22:16.37 |
-26:29:48.6 |
HIP 80290 |
16.70 |
| 2026-10-08 00:00 |
16:22:29.95 |
-26:30:14.9 |
HIP 80290 |
14.30 |
| 2026-10-08 12:00 |
16:22:43.63 |
-26:30:41.3 |
HIP 80290 |
12.18 |
| 2026-10-09 00:00 |
16:22:57.39 |
-26:31:07.9 |
HIP 80290 |
10.55 |
| 2026-10-09 12:00 |
16:23:11.23 |
-26:31:34.7 |
HIP 80290 |
9.67 |
| 2026-10-10 00:00 |
16:23:25.15 |
-26:32:01.7 |
HIP 80290 |
9.77 |
| 2026-10-10 12:00 |
16:23:39.16 |
-26:32:28.9 |
HIP 80290 |
10.84 |
| 2026-10-11 00:00 |
16:23:53.26 |
-26:32:56.3 |
HIP 80290 |
12.64 |