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 · 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
$$
M_a = (16.132 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.132 |
| n |
2.000 |
| gf |
0.969 |
| gb |
-0.701 |
| k |
0.800 |
| δ90 |
9.739 |
| 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) |
| 2026-05-12 00:00 |
16:35:23.68 |
-27:01:44.0 |
HIP 81184 |
18.80 |
| 2026-05-12 12:00 |
16:35:11.62 |
-27:01:40.1 |
HIP 81184 |
18.16 |
| 2026-05-13 00:00 |
16:34:59.50 |
-27:01:35.8 |
HIP 81184 |
17.91 |
| 2026-05-13 12:00 |
16:34:47.32 |
-27:01:31.2 |
HIP 81070 |
17.47 |
| 2026-05-14 00:00 |
16:34:35.08 |
-27:01:26.3 |
HIP 81070 |
14.88 |
| 2026-05-14 12:00 |
16:34:22.79 |
-27:01:21.0 |
HIP 81070 |
12.34 |
| 2026-05-15 00:00 |
16:34:10.44 |
-27:01:15.4 |
HIP 81070 |
9.90 |
| 2026-05-15 12:00 |
16:33:58.04 |
-27:01:09.4 |
HIP 81070 |
7.66 |
| 2026-05-16 00:00 |
16:33:45.59 |
-27:01:03.1 |
HIP 81070 |
5.89 |
| 2026-05-16 12:00 |
16:33:33.09 |
-27:00:56.5 |
HIP 81070 |
5.11 |
| 2026-05-17 00:00 |
16:33:20.54 |
-27:00:49.5 |
HIP 81070 |
5.76 |
| 2026-05-17 12:00 |
16:33:07.94 |
-27:00:42.2 |
HIP 81070 |
7.49 |
| 2026-05-18 00:00 |
16:32:55.31 |
-27:00:34.6 |
HIP 81070 |
9.74 |
| 2026-05-18 12:00 |
16:32:42.63 |
-27:00:26.6 |
HIP 81070 |
12.24 |
| 2026-05-19 00:00 |
16:32:29.91 |
-27:00:18.4 |
HIP 81070 |
14.87 |
| 2026-05-19 12:00 |
16:32:17.15 |
-27:00:09.7 |
HIP 81070 |
17.57 |
| 2026-05-20 00:00 |
16:32:04.36 |
-27:00:00.8 |
HIP 81070 |
20.32 |
| 2026-05-20 12:00 |
16:31:51.53 |
-26:59:51.6 |
HIP 80846 |
20.13 |
| 2026-05-21 00:00 |
16:31:38.67 |
-26:59:42.0 |
HIP 80846 |
17.87 |
| 2026-05-21 12:00 |
16:31:25.77 |
-26:59:32.1 |
HIP 80846 |
15.81 |
| 2026-05-22 00:00 |
16:31:12.85 |
-26:59:21.9 |
HIP 80846 |
14.04 |
| 2026-05-22 12:00 |
16:30:59.90 |
-26:59:11.4 |
HIP 80846 |
12.68 |
| 2026-05-23 00:00 |
16:30:46.93 |
-26:59:00.5 |
HIP 80846 |
11.88 |
| 2026-05-23 12:00 |
16:30:33.93 |
-26:58:49.4 |
HIP 80846 |
11.76 |
| 2026-05-24 00:00 |
16:30:20.91 |
-26:58:38.0 |
HIP 80846 |
12.36 |
| 2026-05-24 12:00 |
16:30:07.87 |
-26:58:26.2 |
HIP 80846 |
13.57 |
| 2026-05-25 00:00 |
16:29:54.81 |
-26:58:14.2 |
HIP 80846 |
15.25 |
| 2026-05-25 12:00 |
16:29:41.73 |
-26:58:01.8 |
HIP 80846 |
17.27 |
| 2026-05-26 00:00 |
16:29:28.64 |
-26:57:49.2 |
HIP 80846 |
19.52 |
| 2026-05-26 12:00 |
16:29:15.53 |
-26:57:36.3 |
HIP 80846 |
21.94 |
| 2026-05-27 00:00 |
16:29:02.42 |
-26:57:23.0 |
HIP 80846 |
24.47 |
| 2026-05-27 12:00 |
16:28:49.29 |
-26:57:09.5 |
HIP 80586 |
25.80 |
| 2026-05-28 00:00 |
16:28:36.15 |
-26:56:55.7 |
HIP 80586 |
23.56 |
| 2026-05-28 12:00 |
16:28:23.01 |
-26:56:41.6 |
HIP 80586 |
21.48 |
| 2026-05-29 00:00 |
16:28:09.86 |
-26:56:27.3 |
HIP 80586 |
19.62 |
| 2026-05-29 12:00 |
16:27:56.71 |
-26:56:12.7 |
HIP 80565 |
17.97 |
| 2026-05-30 00:00 |
16:27:43.56 |
-26:55:57.8 |
HIP 80565 |
16.12 |
| 2026-05-30 12:00 |
16:27:30.41 |
-26:55:42.6 |
HIP 80565 |
14.63 |
| 2026-05-31 00:00 |
16:27:17.25 |
-26:55:27.1 |
HIP 80565 |
13.63 |
| 2026-05-31 12:00 |
16:27:04.11 |
-26:55:11.4 |
HIP 80565 |
13.23 |
| 2026-06-01 00:00 |
16:26:50.96 |
-26:54:55.5 |
HIP 80565 |
13.47 |
| 2026-06-01 12:00 |
16:26:37.83 |
-26:54:39.2 |
HIP 80565 |
14.33 |
| 2026-06-02 00:00 |
16:26:24.70 |
-26:54:22.8 |
HIP 80565 |
15.71 |