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 |
0.998 |
| 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) |
| 2026-09-20 00:00 |
11:05:26.55 |
-30:57:53.2 |
HIP 54139 |
13.65 |
| 2026-09-20 12:00 |
11:05:33.43 |
-30:58:43.6 |
HIP 54139 |
15.35 |
| 2026-09-21 00:00 |
11:05:40.30 |
-30:59:34.6 |
HIP 54139 |
17.04 |
| 2026-09-21 12:00 |
11:05:47.16 |
-31:00:26.0 |
HIP 54139 |
18.74 |
| 2026-09-22 00:00 |
11:05:53.99 |
-31:01:18.0 |
HIP 54139 |
20.45 |
| 2026-09-22 12:00 |
11:06:00.81 |
-31:02:10.4 |
HIP 54362 |
21.21 |
| 2026-09-23 00:00 |
11:06:07.60 |
-31:03:03.3 |
HIP 54362 |
20.66 |
| 2026-09-23 12:00 |
11:06:14.38 |
-31:03:56.7 |
HIP 54362 |
20.24 |
| 2026-09-24 00:00 |
11:06:21.13 |
-31:04:50.6 |
HIP 54362 |
19.96 |
| 2026-09-24 12:00 |
11:06:27.87 |
-31:05:45.0 |
HIP 54362 |
19.84 |
| 2026-09-25 00:00 |
11:06:34.59 |
-31:06:39.8 |
HIP 54362 |
19.88 |
| 2026-09-25 12:00 |
11:06:41.28 |
-31:07:35.1 |
HIP 54362 |
20.07 |
| 2026-09-26 00:00 |
11:06:47.95 |
-31:08:30.9 |
HIP 54362 |
20.41 |
| 2026-09-26 12:00 |
11:06:54.60 |
-31:09:27.1 |
HIP 54362 |
20.89 |
| 2026-09-27 00:00 |
11:07:01.23 |
-31:10:23.9 |
HIP 54362 |
21.51 |
| 2026-09-27 12:00 |
11:07:07.83 |
-31:11:21.0 |
HIP 54362 |
22.25 |
| 2026-09-28 00:00 |
11:07:14.41 |
-31:12:18.7 |
HIP 54362 |
23.10 |
| 2026-09-28 12:00 |
11:07:20.96 |
-31:13:16.7 |
HIP 54496 |
21.61 |
| 2026-09-29 00:00 |
11:07:27.49 |
-31:14:15.3 |
HIP 54496 |
20.00 |
| 2026-09-29 12:00 |
11:07:34.00 |
-31:15:14.2 |
HIP 54496 |
18.40 |
| 2026-09-30 00:00 |
11:07:40.47 |
-31:16:13.7 |
HIP 54496 |
16.83 |
| 2026-09-30 12:00 |
11:07:46.93 |
-31:17:13.5 |
HIP 54496 |
15.29 |
| 2026-10-01 00:00 |
11:07:53.35 |
-31:18:13.8 |
HIP 54496 |
13.80 |
| 2026-10-01 12:00 |
11:07:59.75 |
-31:19:14.6 |
HIP 54496 |
12.37 |
| 2026-10-02 00:00 |
11:08:06.12 |
-31:20:15.7 |
HIP 54496 |
11.02 |
| 2026-10-02 12:00 |
11:08:12.47 |
-31:21:17.3 |
HIP 54496 |
9.78 |
| 2026-10-03 00:00 |
11:08:18.78 |
-31:22:19.3 |
HIP 54496 |
8.71 |
| 2026-10-03 12:00 |
11:08:25.06 |
-31:23:21.8 |
HIP 54496 |
7.88 |
| 2026-10-04 00:00 |
11:08:31.32 |
-31:24:24.6 |
HIP 54496 |
7.36 |
| 2026-10-04 12:00 |
11:08:37.54 |
-31:25:27.9 |
HIP 54496 |
7.23 |
| 2026-10-05 00:00 |
11:08:43.74 |
-31:26:31.6 |
HIP 54496 |
7.49 |
| 2026-10-05 12:00 |
11:08:49.90 |
-31:27:35.7 |
HIP 54496 |
8.12 |
| 2026-10-06 00:00 |
11:08:56.03 |
-31:28:40.2 |
HIP 54496 |
9.03 |
| 2026-10-06 12:00 |
11:09:02.13 |
-31:29:45.1 |
HIP 54496 |
10.15 |
| 2026-10-07 00:00 |
11:09:08.19 |
-31:30:50.4 |
HIP 54496 |
11.42 |
| 2026-10-07 12:00 |
11:09:14.22 |
-31:31:56.1 |
HIP 54496 |
12.79 |
| 2026-10-08 00:00 |
11:09:20.22 |
-31:33:02.1 |
HIP 54496 |
14.23 |
| 2026-10-08 12:00 |
11:09:26.18 |
-31:34:08.6 |
HIP 54496 |
15.72 |
| 2026-10-09 00:00 |
11:09:32.11 |
-31:35:15.4 |
HIP 54603 |
16.36 |
| 2026-10-09 12:00 |
11:09:38.00 |
-31:36:22.6 |
HIP 54603 |
14.68 |
| 2026-10-10 00:00 |
11:09:43.86 |
-31:37:30.2 |
HIP 54603 |
13.00 |
| 2026-10-10 12:00 |
11:09:49.67 |
-31:38:38.1 |
HIP 54603 |
11.33 |
| 2026-10-11 00:00 |
11:09:55.46 |
-31:39:46.4 |
HIP 54603 |
9.65 |