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) |
| 2026-07-29 00:00 |
10:16:35.32 |
+49:13:20.5 |
HIP 50440 |
24.83 |
| 2026-07-29 12:00 |
10:17:09.57 |
+49:12:31.8 |
HIP 50440 |
23.21 |
| 2026-07-30 00:00 |
10:17:43.87 |
+49:11:43.6 |
HIP 50440 |
22.89 |
| 2026-07-30 12:00 |
10:18:18.22 |
+49:10:55.7 |
HIP 50603 |
19.50 |
| 2026-07-31 00:00 |
10:18:52.61 |
+49:10:08.1 |
HIP 50603 |
14.44 |
| 2026-07-31 12:00 |
10:19:27.04 |
+49:09:21.0 |
HIP 50603 |
10.05 |
| 2026-08-01 00:00 |
10:20:01.51 |
+49:08:34.2 |
HIP 50603 |
7.60 |
| 2026-08-01 12:00 |
10:20:36.02 |
+49:07:47.8 |
HIP 50603 |
8.89 |
| 2026-08-02 00:00 |
10:21:10.58 |
+49:07:01.8 |
HIP 50603 |
12.85 |
| 2026-08-02 12:00 |
10:21:45.18 |
+49:06:16.2 |
HIP 50603 |
17.78 |
| 2026-08-03 00:00 |
10:22:19.82 |
+49:05:31.0 |
HIP 50918 |
15.44 |
| 2026-08-03 12:00 |
10:22:54.50 |
+49:04:46.2 |
HIP 50918 |
9.82 |
| 2026-08-04 00:00 |
10:23:29.22 |
+49:04:01.8 |
HIP 50918 |
4.45 |
| 2026-08-04 12:00 |
10:24:03.98 |
+49:03:17.8 |
HIP 50918 |
3.00 |
| 2026-08-05 00:00 |
10:24:38.77 |
+49:02:34.2 |
HIP 50918 |
8.01 |
| 2026-08-05 12:00 |
10:25:13.61 |
+49:01:51.0 |
HIP 50918 |
13.62 |
| 2026-08-06 00:00 |
10:25:48.48 |
+49:01:08.3 |
HIP 50918 |
19.31 |
| 2026-08-06 12:00 |
10:26:23.39 |
+49:00:26.0 |
HIP 51247 |
16.59 |
| 2026-08-07 00:00 |
10:26:58.34 |
+48:59:44.1 |
HIP 51247 |
10.82 |
| 2026-08-07 12:00 |
10:27:33.32 |
+48:59:02.7 |
HIP 51247 |
5.06 |
| 2026-08-08 00:00 |
10:28:08.34 |
+48:58:21.7 |
HIP 51247 |
0.98 |
| 2026-08-08 12:00 |
10:28:43.39 |
+48:57:41.1 |
HIP 51247 |
6.58 |
| 2026-08-09 00:00 |
10:29:18.48 |
+48:57:01.1 |
HIP 51247 |
12.37 |
| 2026-08-09 12:00 |
10:29:53.60 |
+48:56:21.5 |
HIP 51247 |
18.17 |
| 2026-08-10 00:00 |
10:30:28.76 |
+48:55:42.3 |
HIP 51247 |
23.98 |
| 2026-08-10 12:00 |
10:31:03.95 |
+48:55:03.7 |
HIP 51649 |
25.34 |
| 2026-08-11 00:00 |
10:31:39.17 |
+48:54:25.5 |
HIP 51649 |
21.45 |
| 2026-08-11 12:00 |
10:32:14.42 |
+48:53:47.8 |
HIP 51649 |
18.57 |
| 2026-08-12 00:00 |
10:32:49.70 |
+48:53:10.7 |
HIP 51649 |
17.23 |
| 2026-08-12 12:00 |
10:33:25.01 |
+48:52:34.0 |
HIP 51750 |
16.63 |
| 2026-08-13 00:00 |
10:34:00.36 |
+48:51:57.8 |
HIP 51750 |
14.87 |
| 2026-08-13 12:00 |
10:34:35.73 |
+48:51:22.2 |
HIP 51750 |
15.27 |
| 2026-08-14 00:00 |
10:35:11.13 |
+48:50:47.0 |
HIP 51750 |
17.69 |
| 2026-08-14 12:00 |
10:35:46.55 |
+48:50:12.4 |
HIP 51969 |
15.75 |
| 2026-08-15 00:00 |
10:36:22.00 |
+48:49:38.3 |
HIP 51969 |
11.12 |
| 2026-08-15 12:00 |
10:36:57.48 |
+48:49:04.8 |
HIP 51969 |
8.26 |
| 2026-08-16 00:00 |
10:37:32.99 |
+48:48:31.8 |
HIP 51969 |
9.06 |
| 2026-08-16 12:00 |
10:38:08.52 |
+48:47:59.4 |
HIP 51969 |
12.86 |
| 2026-08-17 00:00 |
10:38:44.07 |
+48:47:27.5 |
HIP 51969 |
17.83 |
| 2026-08-17 12:00 |
10:39:19.64 |
+48:46:56.1 |
HIP 52287 |
20.94 |
| 2026-08-18 00:00 |
10:39:55.24 |
+48:46:25.4 |
HIP 52289 |
16.50 |
| 2026-08-18 12:00 |
10:40:30.87 |
+48:45:55.2 |
HIP 52289 |
12.74 |
| 2026-08-19 00:00 |
10:41:06.51 |
+48:45:25.5 |
HIP 52289 |
11.07 |