메타데이터
| 항목 |
값 |
| Designation |
C/2022 L4 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2021-12-08T15:04:17.385600Z |
| Orbit solution date (soln_date, UTC) |
2022-07-06T03:12:55Z |
| Obs used |
43 |
| NEO |
- |
| M1 |
16.600 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-06-04T09:30:37.209600Z |
| Discovery magnitude (MPC) |
21.40 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-06-12.0000000 |
| e |
0.98813992 |
| q (au) |
3.014561 |
| a (au) |
254.177194 |
| i (deg) |
141.223705 |
| Ω (om, deg) |
66.051128 |
| ω (w, deg) |
125.300473 |
| M (ma, deg) |
0.045086 |
밝기
산란 + 전체 선형
$$
M_a = (20.000 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
20.000 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.841 |
| k |
0.937 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
10:51:20.96 |
-33:29:29.8 |
HIP 53052 |
5.43 |
| 2026-05-12 12:00 |
10:51:15.25 |
-33:27:40.4 |
HIP 53052 |
7.12 |
| 2026-05-13 00:00 |
10:51:09.64 |
-33:25:51.2 |
HIP 53052 |
9.01 |
| 2026-05-13 12:00 |
10:51:04.12 |
-33:24:02.2 |
HIP 53052 |
11.00 |
| 2026-05-14 00:00 |
10:50:58.71 |
-33:22:13.4 |
HIP 52973 |
12.92 |
| 2026-05-14 12:00 |
10:50:53.39 |
-33:20:24.8 |
HIP 52973 |
11.18 |
| 2026-05-15 00:00 |
10:50:48.16 |
-33:18:36.4 |
HIP 52973 |
9.61 |
| 2026-05-15 12:00 |
10:50:43.04 |
-33:16:48.3 |
HIP 52973 |
8.30 |
| 2026-05-16 00:00 |
10:50:38.01 |
-33:15:00.4 |
HIP 52973 |
7.39 |
| 2026-05-16 12:00 |
10:50:33.08 |
-33:13:12.8 |
HIP 52973 |
7.01 |
| 2026-05-17 00:00 |
10:50:28.24 |
-33:11:25.4 |
HIP 52973 |
7.24 |
| 2026-05-17 12:00 |
10:50:23.50 |
-33:09:38.3 |
HIP 52973 |
8.01 |
| 2026-05-18 00:00 |
10:50:18.86 |
-33:07:51.5 |
HIP 52973 |
9.19 |
| 2026-05-18 12:00 |
10:50:14.32 |
-33:06:05.0 |
HIP 52973 |
10.62 |
| 2026-05-19 00:00 |
10:50:09.87 |
-33:04:18.7 |
HIP 52973 |
12.22 |
| 2026-05-19 12:00 |
10:50:05.52 |
-33:02:32.8 |
HIP 52973 |
13.92 |
| 2026-05-20 00:00 |
10:50:01.26 |
-33:00:47.2 |
HIP 52973 |
15.67 |
| 2026-05-20 12:00 |
10:49:57.11 |
-32:59:01.9 |
HIP 52973 |
17.47 |
| 2026-05-21 00:00 |
10:49:53.04 |
-32:57:16.9 |
HIP 52973 |
19.29 |
| 2026-05-21 12:00 |
10:49:49.08 |
-32:55:32.3 |
HIP 52973 |
21.13 |
| 2026-05-22 00:00 |
10:49:45.21 |
-32:53:48.0 |
HIP 52973 |
22.97 |
| 2026-05-22 12:00 |
10:49:41.43 |
-32:52:04.0 |
HIP 52973 |
24.82 |
| 2026-05-23 00:00 |
10:49:37.75 |
-32:50:20.4 |
HIP 53067 |
25.82 |
| 2026-05-23 12:00 |
10:49:34.17 |
-32:48:37.2 |
HIP 53067 |
25.77 |
| 2026-05-24 00:00 |
10:49:30.68 |
-32:46:54.4 |
HIP 53067 |
25.83 |
| 2026-05-24 12:00 |
10:49:27.28 |
-32:45:11.9 |
HIP 53067 |
26.02 |
| 2026-05-25 00:00 |
10:49:23.98 |
-32:43:29.8 |
HIP 53067 |
26.32 |
| 2026-05-25 12:00 |
10:49:20.77 |
-32:41:48.2 |
HIP 53067 |
26.72 |
| 2026-05-26 00:00 |
10:49:17.66 |
-32:40:06.9 |
HIP 53067 |
27.22 |
| 2026-05-26 12:00 |
10:49:14.64 |
-32:38:26.0 |
HIP 53067 |
27.81 |
| 2026-05-27 00:00 |
10:49:11.71 |
-32:36:45.5 |
HIP 53048 |
27.88 |
| 2026-05-27 12:00 |
10:49:08.87 |
-32:35:05.5 |
HIP 53048 |
27.83 |
| 2026-05-28 00:00 |
10:49:06.13 |
-32:33:25.9 |
HIP 53048 |
27.88 |
| 2026-05-28 12:00 |
10:49:03.48 |
-32:31:46.7 |
HIP 53048 |
28.03 |
| 2026-05-29 00:00 |
10:49:00.92 |
-32:30:07.9 |
HIP 53048 |
28.26 |
| 2026-05-29 12:00 |
10:48:58.46 |
-32:28:29.6 |
HIP 53048 |
28.58 |
| 2026-05-30 00:00 |
10:48:56.08 |
-32:26:51.7 |
HIP 53048 |
28.97 |
| 2026-05-30 12:00 |
10:48:53.80 |
-32:25:14.3 |
HIP 53048 |
29.45 |
| 2026-05-31 00:00 |
10:48:51.61 |
-32:23:37.4 |
HIP 53048 |
29.99 |
| 2026-05-31 12:00 |
10:48:49.51 |
-32:22:00.9 |
HIP 53048 |
30.59 |
| 2026-06-01 00:00 |
10:48:47.50 |
-32:20:24.9 |
HIP 53048 |
31.25 |
| 2026-06-01 12:00 |
10:48:45.58 |
-32:18:49.4 |
HIP 53048 |
31.97 |
| 2026-06-02 00:00 |
10:48:43.75 |
-32:17:14.3 |
HIP 53048 |
32.73 |