메타데이터
| 항목 |
값 |
| Designation |
C/2023 X7 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-05-14T20:10:57.051840Z |
| Orbit solution date (soln_date, UTC) |
2024-02-21T16:42:14Z |
| Obs used |
69 |
| NEO |
- |
| M1 |
13.000 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-12-10T09:19:12.489600Z |
| Discovery magnitude (MPC) |
20.42 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2024-01-10.0000000 |
| e |
1.00204616 |
| q (au) |
4.821645 |
| a (au) |
-2356.440748 |
| i (deg) |
69.055573 |
| Ω (om, deg) |
119.207283 |
| ω (w, deg) |
354.334373 |
| M (ma, deg) |
-0.004229 |
밝기
산란 + 전체 선형
$$
M_a = (9.937 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.937 |
| n |
6.000 |
| gf |
0.910 |
| gb |
-0.942 |
| k |
0.800 |
| δ90 |
8.660 |
| 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) |
| 2026-06-01 00:00 |
09:18:49.72 |
+51:09:42.2 |
HIP 45557 |
18.66 |
| 2026-06-01 12:00 |
09:19:13.23 |
+51:08:40.3 |
HIP 45836 |
15.94 |
| 2026-06-02 00:00 |
09:19:36.90 |
+51:07:38.3 |
HIP 45836 |
13.37 |
| 2026-06-02 12:00 |
09:20:00.71 |
+51:06:36.1 |
HIP 45836 |
11.53 |
| 2026-06-03 00:00 |
09:20:24.67 |
+51:05:33.8 |
HIP 45836 |
10.80 |
| 2026-06-03 12:00 |
09:20:48.78 |
+51:04:31.3 |
HIP 45922 |
10.51 |
| 2026-06-04 00:00 |
09:21:13.04 |
+51:03:28.8 |
HIP 45922 |
6.60 |
| 2026-06-04 12:00 |
09:21:37.44 |
+51:02:26.1 |
HIP 45922 |
2.79 |
| 2026-06-05 00:00 |
09:22:01.99 |
+51:01:23.3 |
HIP 45922 |
1.93 |
| 2026-06-05 12:00 |
09:22:26.68 |
+51:00:20.3 |
HIP 45965 |
0.60 |
| 2026-06-06 00:00 |
09:22:51.51 |
+50:59:17.3 |
HIP 45965 |
3.95 |
| 2026-06-06 12:00 |
09:23:16.48 |
+50:58:14.2 |
HIP 45965 |
8.00 |
| 2026-06-07 00:00 |
09:23:41.59 |
+50:57:10.9 |
HIP 46152 |
10.12 |
| 2026-06-07 12:00 |
09:24:06.84 |
+50:56:07.6 |
HIP 46152 |
6.01 |
| 2026-06-08 00:00 |
09:24:32.23 |
+50:55:04.2 |
HIP 46152 |
1.88 |
| 2026-06-08 12:00 |
09:24:57.76 |
+50:54:00.7 |
HIP 46152 |
2.30 |
| 2026-06-09 00:00 |
09:25:23.42 |
+50:52:57.1 |
HIP 46152 |
6.48 |
| 2026-06-09 12:00 |
09:25:49.22 |
+50:51:53.5 |
HIP 46152 |
10.68 |
| 2026-06-10 00:00 |
09:26:15.14 |
+50:50:49.7 |
HIP 46152 |
14.91 |
| 2026-06-10 12:00 |
09:26:41.21 |
+50:49:45.9 |
HIP 46385 |
13.13 |
| 2026-06-11 00:00 |
09:27:07.40 |
+50:48:42.1 |
HIP 46385 |
10.17 |
| 2026-06-11 12:00 |
09:27:33.72 |
+50:47:38.2 |
HIP 46385 |
8.42 |
| 2026-06-12 00:00 |
09:28:00.18 |
+50:46:34.2 |
HIP 46385 |
8.69 |
| 2026-06-12 12:00 |
09:28:26.76 |
+50:45:30.2 |
HIP 46385 |
10.86 |
| 2026-06-13 00:00 |
09:28:53.46 |
+50:44:26.1 |
HIP 46385 |
14.09 |
| 2026-06-13 12:00 |
09:29:20.30 |
+50:43:22.0 |
HIP 46385 |
17.83 |
| 2026-06-14 00:00 |
09:29:47.26 |
+50:42:17.9 |
HIP 46607 |
21.26 |
| 2026-06-14 12:00 |
09:30:14.34 |
+50:41:13.8 |
HIP 46607 |
21.94 |
| 2026-06-15 00:00 |
09:30:41.54 |
+50:40:09.6 |
HIP 46607 |
23.45 |
| 2026-06-15 12:00 |
09:31:08.87 |
+50:39:05.4 |
HIP 46607 |
25.65 |
| 2026-06-16 00:00 |
09:31:36.31 |
+50:38:01.3 |
HIP 46607 |
28.38 |
| 2026-06-16 12:00 |
09:32:03.88 |
+50:36:57.1 |
HIP 46607 |
31.53 |
| 2026-06-17 00:00 |
09:32:31.56 |
+50:35:52.9 |
HIP 46607 |
34.98 |
| 2026-06-17 12:00 |
09:32:59.36 |
+50:34:48.7 |
HIP 46607 |
38.66 |
| 2026-06-18 00:00 |
09:33:27.27 |
+50:33:44.6 |
HIP 47049 |
37.94 |
| 2026-06-18 12:00 |
09:33:55.30 |
+50:32:40.5 |
HIP 47049 |
35.09 |
| 2026-06-19 00:00 |
09:34:23.44 |
+50:31:36.4 |
HIP 47049 |
32.63 |
| 2026-06-19 12:00 |
09:34:51.69 |
+50:30:32.3 |
HIP 47232 |
28.98 |
| 2026-06-20 00:00 |
09:35:20.05 |
+50:29:28.2 |
HIP 47232 |
25.49 |
| 2026-06-20 12:00 |
09:35:48.52 |
+50:28:24.2 |
HIP 47232 |
22.40 |
| 2026-06-21 00:00 |
09:36:17.10 |
+50:27:20.3 |
HIP 47232 |
19.92 |
| 2026-06-21 12:00 |
09:36:45.78 |
+50:26:16.4 |
HIP 47232 |
18.29 |
| 2026-06-22 00:00 |
09:37:14.57 |
+50:25:12.5 |
HIP 47331 |
17.43 |