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
$$
M_a = (9.949 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.949 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.942 |
| k |
0.800 |
| δ90 |
9.716 |
| 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) |
| 2026-03-26 00:00 |
08:58:14.83 |
+52:10:55.2 |
HIP 44054 |
7.10 |
| 2026-03-26 12:00 |
08:58:06.75 |
+52:11:37.6 |
HIP 44054 |
6.61 |
| 2026-03-27 00:00 |
08:57:58.94 |
+52:12:18.3 |
HIP 44054 |
6.41 |
| 2026-03-27 12:00 |
08:57:51.42 |
+52:12:57.2 |
HIP 44054 |
6.50 |
| 2026-03-28 00:00 |
08:57:44.18 |
+52:13:34.4 |
HIP 44054 |
6.83 |
| 2026-03-28 12:00 |
08:57:37.22 |
+52:14:09.9 |
HIP 44054 |
7.35 |
| 2026-03-29 00:00 |
08:57:30.54 |
+52:14:43.7 |
HIP 44054 |
7.99 |
| 2026-03-29 12:00 |
08:57:24.15 |
+52:15:15.9 |
HIP 44054 |
8.71 |
| 2026-03-30 00:00 |
08:57:18.03 |
+52:15:46.4 |
HIP 44054 |
9.46 |
| 2026-03-30 12:00 |
08:57:12.20 |
+52:16:15.2 |
HIP 44054 |
10.24 |
| 2026-03-31 00:00 |
08:57:06.65 |
+52:16:42.5 |
HIP 44054 |
11.01 |
| 2026-03-31 12:00 |
08:57:01.39 |
+52:17:08.1 |
HIP 44054 |
11.77 |
| 2026-04-01 00:00 |
08:56:56.41 |
+52:17:32.2 |
HIP 44054 |
12.51 |
| 2026-04-01 12:00 |
08:56:51.71 |
+52:17:54.8 |
HIP 44054 |
13.22 |
| 2026-04-02 00:00 |
08:56:47.29 |
+52:18:15.8 |
HIP 44054 |
13.89 |
| 2026-04-02 12:00 |
08:56:43.16 |
+52:18:35.3 |
HIP 44054 |
14.53 |
| 2026-04-03 00:00 |
08:56:39.31 |
+52:18:53.3 |
HIP 44054 |
15.14 |
| 2026-04-03 12:00 |
08:56:35.75 |
+52:19:09.8 |
HIP 44054 |
15.70 |
| 2026-04-04 00:00 |
08:56:32.47 |
+52:19:24.8 |
HIP 44054 |
16.22 |
| 2026-04-04 12:00 |
08:56:29.47 |
+52:19:38.5 |
HIP 44054 |
16.69 |
| 2026-04-05 00:00 |
08:56:26.76 |
+52:19:50.7 |
HIP 44054 |
17.13 |
| 2026-04-05 12:00 |
08:56:24.33 |
+52:20:01.5 |
HIP 44054 |
17.51 |
| 2026-04-06 00:00 |
08:56:22.18 |
+52:20:10.9 |
HIP 44054 |
17.86 |
| 2026-04-06 12:00 |
08:56:20.32 |
+52:20:19.0 |
HIP 44054 |
18.16 |
| 2026-04-07 00:00 |
08:56:18.74 |
+52:20:25.7 |
HIP 44054 |
18.41 |
| 2026-04-07 12:00 |
08:56:17.44 |
+52:20:31.0 |
HIP 44054 |
18.62 |
| 2026-04-08 00:00 |
08:56:16.42 |
+52:20:35.1 |
HIP 44054 |
18.78 |
| 2026-04-08 12:00 |
08:56:15.69 |
+52:20:37.9 |
HIP 44054 |
18.90 |
| 2026-04-09 00:00 |
08:56:15.24 |
+52:20:39.3 |
HIP 44054 |
18.97 |
| 2026-04-09 12:00 |
08:56:15.07 |
+52:20:39.6 |
HIP 44054 |
19.00 |
| 2026-04-10 00:00 |
08:56:15.18 |
+52:20:38.5 |
HIP 44054 |
18.98 |
| 2026-04-10 12:00 |
08:56:15.57 |
+52:20:36.3 |
HIP 44054 |
18.91 |
| 2026-04-11 00:00 |
08:56:16.24 |
+52:20:32.8 |
HIP 44054 |
18.80 |
| 2026-04-11 12:00 |
08:56:17.20 |
+52:20:28.1 |
HIP 44054 |
18.65 |
| 2026-04-12 00:00 |
08:56:18.43 |
+52:20:22.3 |
HIP 44054 |
18.45 |
| 2026-04-12 12:00 |
08:56:19.94 |
+52:20:15.3 |
HIP 44054 |
18.21 |
| 2026-04-13 00:00 |
08:56:21.74 |
+52:20:07.1 |
HIP 44054 |
17.92 |
| 2026-04-13 12:00 |
08:56:23.80 |
+52:19:57.8 |
HIP 44054 |
17.59 |
| 2026-04-14 00:00 |
08:56:26.15 |
+52:19:47.4 |
HIP 44054 |
17.21 |
| 2026-04-14 12:00 |
08:56:28.78 |
+52:19:35.9 |
HIP 44054 |
16.79 |
| 2026-04-15 00:00 |
08:56:31.68 |
+52:19:23.3 |
HIP 44054 |
16.33 |
| 2026-04-15 12:00 |
08:56:34.86 |
+52:19:09.6 |
HIP 44054 |
15.83 |
| 2026-04-16 00:00 |
08:56:38.31 |
+52:18:54.9 |
HIP 44054 |
15.29 |