메타데이터
| 항목 |
값 |
| Designation |
P/2015 X3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-08-08T01:02:13.706880Z |
| Orbit solution date (soln_date, UTC) |
2023-05-03T22:43:53Z |
| Obs used |
35 |
| NEO |
- |
| M1 |
14.400 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-11-30.0000000 |
| e |
0.43811818 |
| q (au) |
2.822784 |
| a (au) |
5.023804 |
| i (deg) |
24.376797 |
| Ω (om, deg) |
77.328495 |
| ω (w, deg) |
306.951390 |
| M (ma, deg) |
9.974595 |
밝기
산란 + 전체 선형
$$
M_a = (11.148 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.148 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
00:37:08.20 |
-18:41:19.1 |
HIP 3060 |
26.46 |
| 2026-05-12 12:00 |
00:37:53.93 |
-18:38:11.8 |
HIP 3060 |
19.26 |
| 2026-05-13 00:00 |
00:38:39.61 |
-18:35:05.4 |
HIP 3060 |
17.18 |
| 2026-05-13 12:00 |
00:39:25.24 |
-18:32:00.0 |
HIP 3060 |
21.72 |
| 2026-05-14 00:00 |
00:40:10.81 |
-18:28:55.4 |
HIP 3060 |
30.00 |
| 2026-05-14 12:00 |
00:40:56.32 |
-18:25:51.7 |
HIP 3190 |
32.92 |
| 2026-05-15 00:00 |
00:41:41.78 |
-18:22:49.0 |
HIP 3190 |
33.18 |
| 2026-05-15 12:00 |
00:42:27.19 |
-18:19:47.2 |
HIP 3419 |
26.17 |
| 2026-05-16 00:00 |
00:43:12.53 |
-18:16:46.3 |
HIP 3419 |
18.38 |
| 2026-05-16 12:00 |
00:43:57.82 |
-18:13:46.3 |
HIP 3419 |
15.53 |
| 2026-05-17 00:00 |
00:44:43.05 |
-18:10:47.4 |
HIP 3419 |
19.85 |
| 2026-05-17 12:00 |
00:45:28.22 |
-18:07:49.3 |
HIP 3663 |
22.32 |
| 2026-05-18 00:00 |
00:46:13.33 |
-18:04:52.3 |
HIP 3663 |
15.96 |
| 2026-05-18 12:00 |
00:46:58.37 |
-18:01:56.2 |
HIP 3717 |
10.80 |
| 2026-05-19 00:00 |
00:47:43.36 |
-17:59:01.1 |
HIP 3717 |
4.67 |
| 2026-05-19 12:00 |
00:48:28.28 |
-17:56:07.0 |
HIP 3717 |
13.12 |
| 2026-05-20 00:00 |
00:49:13.14 |
-17:53:13.9 |
HIP 3792 |
21.56 |
| 2026-05-20 12:00 |
00:49:57.94 |
-17:50:21.8 |
HIP 3792 |
24.87 |
| 2026-05-21 00:00 |
00:50:42.67 |
-17:47:30.7 |
HIP 3792 |
31.87 |
| 2026-05-21 12:00 |
00:51:27.34 |
-17:44:40.6 |
HIP 4160 |
24.56 |
| 2026-05-22 00:00 |
00:52:11.94 |
-17:41:51.6 |
HIP 4160 |
13.58 |
| 2026-05-22 12:00 |
00:52:56.48 |
-17:39:03.6 |
HIP 4160 |
2.69 |
| 2026-05-23 00:00 |
00:53:40.95 |
-17:36:16.5 |
HIP 4160 |
8.39 |
| 2026-05-23 12:00 |
00:54:25.35 |
-17:33:30.6 |
HIP 4299 |
11.89 |
| 2026-05-24 00:00 |
00:55:09.69 |
-17:30:45.7 |
HIP 4299 |
4.29 |
| 2026-05-24 12:00 |
00:55:53.95 |
-17:28:01.8 |
HIP 4359 |
3.53 |
| 2026-05-25 00:00 |
00:56:38.15 |
-17:25:19.0 |
HIP 4359 |
12.54 |
| 2026-05-25 12:00 |
00:57:22.28 |
-17:22:37.2 |
HIP 4595 |
21.85 |
| 2026-05-26 00:00 |
00:58:06.35 |
-17:19:56.5 |
HIP 4595 |
13.82 |
| 2026-05-26 12:00 |
00:58:50.34 |
-17:17:16.9 |
HIP 4595 |
11.81 |
| 2026-05-27 00:00 |
00:59:34.26 |
-17:14:38.4 |
HIP 4711 |
16.98 |
| 2026-05-27 12:00 |
01:00:18.11 |
-17:12:00.9 |
HIP 4718 |
7.86 |
| 2026-05-28 00:00 |
01:01:01.89 |
-17:09:24.6 |
HIP 4718 |
7.65 |
| 2026-05-28 12:00 |
01:01:45.60 |
-17:06:49.3 |
HIP 4718 |
16.95 |
| 2026-05-29 00:00 |
01:02:29.23 |
-17:04:15.2 |
HIP 4980 |
20.41 |
| 2026-05-29 12:00 |
01:03:12.79 |
-17:01:42.1 |
HIP 4980 |
13.36 |
| 2026-05-30 00:00 |
01:03:56.28 |
-16:59:10.2 |
HIP 4980 |
13.01 |
| 2026-05-30 12:00 |
01:04:39.69 |
-16:56:39.5 |
HIP 4980 |
19.69 |
| 2026-05-31 00:00 |
01:05:23.03 |
-16:54:09.8 |
HIP 5128 |
18.51 |
| 2026-05-31 12:00 |
01:06:06.29 |
-16:51:41.3 |
HIP 5128 |
16.82 |
| 2026-06-01 00:00 |
01:06:49.48 |
-16:49:13.9 |
HIP 5128 |
21.22 |
| 2026-06-01 12:00 |
01:07:32.59 |
-16:46:47.7 |
HIP 5329 |
16.14 |
| 2026-06-02 00:00 |
01:08:15.62 |
-16:44:22.7 |
HIP 5329 |
10.93 |