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) |
| 2026-09-20 00:00 |
11:19:32.28 |
+48:37:31.0 |
HIP 55377 |
8.62 |
| 2026-09-20 12:00 |
11:20:08.35 |
+48:37:49.9 |
HIP 55377 |
3.90 |
| 2026-09-21 00:00 |
11:20:44.41 |
+48:38:09.8 |
HIP 55377 |
5.24 |
| 2026-09-21 12:00 |
11:21:20.47 |
+48:38:30.6 |
HIP 55377 |
10.54 |
| 2026-09-22 00:00 |
11:21:56.51 |
+48:38:52.3 |
HIP 55377 |
16.31 |
| 2026-09-22 12:00 |
11:22:32.54 |
+48:39:15.0 |
HIP 55682 |
20.36 |
| 2026-09-23 00:00 |
11:23:08.56 |
+48:39:38.7 |
HIP 55682 |
14.58 |
| 2026-09-23 12:00 |
11:23:44.57 |
+48:40:03.3 |
HIP 55682 |
9.05 |
| 2026-09-24 00:00 |
11:24:20.56 |
+48:40:28.8 |
HIP 55682 |
4.73 |
| 2026-09-24 12:00 |
11:24:56.55 |
+48:40:55.4 |
HIP 55682 |
5.85 |
| 2026-09-25 00:00 |
11:25:32.51 |
+48:41:22.9 |
HIP 55682 |
10.82 |
| 2026-09-25 12:00 |
11:26:08.47 |
+48:41:51.4 |
HIP 55682 |
16.47 |
| 2026-09-26 00:00 |
11:26:44.41 |
+48:42:20.8 |
HIP 55682 |
22.28 |
| 2026-09-26 12:00 |
11:27:20.34 |
+48:42:51.3 |
HIP 55880 |
23.44 |
| 2026-09-27 00:00 |
11:27:56.25 |
+48:43:22.7 |
HIP 55880 |
24.98 |
| 2026-09-27 12:00 |
11:28:32.15 |
+48:43:55.2 |
HIP 56147 |
22.90 |
| 2026-09-28 00:00 |
11:29:08.04 |
+48:44:28.6 |
HIP 56147 |
17.81 |
| 2026-09-28 12:00 |
11:29:43.90 |
+48:45:03.1 |
HIP 56147 |
13.42 |
| 2026-09-29 00:00 |
11:30:19.76 |
+48:45:38.5 |
HIP 56194 |
8.50 |
| 2026-09-29 12:00 |
11:30:55.59 |
+48:46:15.0 |
HIP 56194 |
2.67 |
| 2026-09-30 00:00 |
11:31:31.41 |
+48:46:52.5 |
HIP 56194 |
3.52 |
| 2026-09-30 12:00 |
11:32:07.21 |
+48:47:31.1 |
HIP 56268 |
1.84 |
| 2026-10-01 00:00 |
11:32:42.99 |
+48:48:10.7 |
HIP 56268 |
6.43 |
| 2026-10-01 12:00 |
11:33:18.76 |
+48:48:51.3 |
HIP 56268 |
12.22 |
| 2026-10-02 00:00 |
11:33:54.50 |
+48:49:33.0 |
HIP 56477 |
8.24 |
| 2026-10-02 12:00 |
11:34:30.23 |
+48:50:15.7 |
HIP 56477 |
2.91 |
| 2026-10-03 00:00 |
11:35:05.94 |
+48:50:59.5 |
HIP 56477 |
4.40 |
| 2026-10-03 12:00 |
11:35:41.62 |
+48:51:44.4 |
HIP 56477 |
10.02 |
| 2026-10-04 00:00 |
11:36:17.29 |
+48:52:30.4 |
HIP 56477 |
15.86 |
| 2026-10-04 12:00 |
11:36:52.93 |
+48:53:17.4 |
HIP 56477 |
21.74 |
| 2026-10-05 00:00 |
11:37:28.55 |
+48:54:05.5 |
HIP 56885 |
22.76 |
| 2026-10-05 12:00 |
11:38:04.16 |
+48:54:54.8 |
HIP 56885 |
17.56 |
| 2026-10-06 00:00 |
11:38:39.73 |
+48:55:45.1 |
HIP 56885 |
13.00 |
| 2026-10-06 12:00 |
11:39:15.29 |
+48:56:36.5 |
HIP 56885 |
9.99 |
| 2026-10-07 00:00 |
11:39:50.81 |
+48:57:29.1 |
HIP 56885 |
10.05 |
| 2026-10-07 12:00 |
11:40:26.32 |
+48:58:22.8 |
HIP 56885 |
13.13 |
| 2026-10-08 00:00 |
11:41:01.79 |
+48:59:17.6 |
HIP 56885 |
17.71 |
| 2026-10-08 12:00 |
11:41:37.25 |
+49:00:13.5 |
HIP 56885 |
22.91 |
| 2026-10-09 00:00 |
11:42:12.67 |
+49:01:10.6 |
HIP 56885 |
28.39 |
| 2026-10-09 12:00 |
11:42:48.07 |
+49:02:08.8 |
HIP 56885 |
34.01 |
| 2026-10-10 00:00 |
11:43:23.43 |
+49:03:08.2 |
HIP 57257 |
33.93 |
| 2026-10-10 12:00 |
11:43:58.77 |
+49:04:08.7 |
HIP 57491 |
30.05 |
| 2026-10-11 00:00 |
11:44:34.08 |
+49:05:10.4 |
HIP 57491 |
24.23 |