메타데이터
| 항목 |
값 |
| Designation |
C/2022 B4 |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2022-01-29T21:29:47.313600Z |
| Orbit solution date (soln_date, UTC) |
2022-04-14T14:49:33Z |
| Obs used |
128 |
| NEO |
- |
| M1 |
21.700 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-01-29T11:09:26.064000Z |
| Discovery magnitude (MPC) |
20.81 G |
| Discovery observatory (MPC) |
V00 · Kitt Peak-Bok |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-02-26.0000000 |
| e |
0.99639588 |
| q (au) |
1.379643 |
| a (au) |
382.796465 |
| i (deg) |
20.043251 |
| Ω (om, deg) |
340.661761 |
| ω (w, deg) |
152.955070 |
| M (ma, deg) |
0.003567 |
밝기
산란 + 전체 선형
$$
M_a = (20.000 + 5.943\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
20.000 |
| n |
5.943 |
| gf |
1.000 |
| gb |
-0.814 |
| k |
0.994 |
| 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 |
18:58:47.86 |
-41:41:49.3 |
HIP 93075 |
13.58 |
| 2026-05-12 12:00 |
18:58:41.77 |
-41:42:27.3 |
HIP 93075 |
12.47 |
| 2026-05-13 00:00 |
18:58:35.60 |
-41:43:05.1 |
HIP 93075 |
11.37 |
| 2026-05-13 12:00 |
18:58:29.34 |
-41:43:42.8 |
HIP 93075 |
10.32 |
| 2026-05-14 00:00 |
18:58:23.00 |
-41:44:20.4 |
HIP 93075 |
9.31 |
| 2026-05-14 12:00 |
18:58:16.57 |
-41:44:57.8 |
HIP 93075 |
8.39 |
| 2026-05-15 00:00 |
18:58:10.06 |
-41:45:35.0 |
HIP 93075 |
7.58 |
| 2026-05-15 12:00 |
18:58:03.46 |
-41:46:12.1 |
HIP 93075 |
6.93 |
| 2026-05-16 00:00 |
18:57:56.78 |
-41:46:49.0 |
HIP 93075 |
6.50 |
| 2026-05-16 12:00 |
18:57:50.01 |
-41:47:25.7 |
HIP 93075 |
6.34 |
| 2026-05-17 00:00 |
18:57:43.16 |
-41:48:02.2 |
HIP 93075 |
6.49 |
| 2026-05-17 12:00 |
18:57:36.24 |
-41:48:38.6 |
HIP 93075 |
6.92 |
| 2026-05-18 00:00 |
18:57:29.23 |
-41:49:14.7 |
HIP 93075 |
7.60 |
| 2026-05-18 12:00 |
18:57:22.14 |
-41:49:50.7 |
HIP 93075 |
8.47 |
| 2026-05-19 00:00 |
18:57:14.97 |
-41:50:26.4 |
HIP 93075 |
9.49 |
| 2026-05-19 12:00 |
18:57:07.72 |
-41:51:02.0 |
HIP 93075 |
10.61 |
| 2026-05-20 00:00 |
18:57:00.39 |
-41:51:37.3 |
HIP 93075 |
11.82 |
| 2026-05-20 12:00 |
18:56:52.99 |
-41:52:12.5 |
HIP 93075 |
13.09 |
| 2026-05-21 00:00 |
18:56:45.51 |
-41:52:47.4 |
HIP 93075 |
14.41 |
| 2026-05-21 12:00 |
18:56:37.95 |
-41:53:22.1 |
HIP 93075 |
15.78 |
| 2026-05-22 00:00 |
18:56:30.32 |
-41:53:56.5 |
HIP 92915 |
15.42 |
| 2026-05-22 12:00 |
18:56:22.61 |
-41:54:30.8 |
HIP 92915 |
14.29 |
| 2026-05-23 00:00 |
18:56:14.84 |
-41:55:04.8 |
HIP 92915 |
13.23 |
| 2026-05-23 12:00 |
18:56:06.98 |
-41:55:38.5 |
HIP 92915 |
12.29 |
| 2026-05-24 00:00 |
18:55:59.06 |
-41:56:12.0 |
HIP 92915 |
11.48 |
| 2026-05-24 12:00 |
18:55:51.06 |
-41:56:45.3 |
HIP 92915 |
10.84 |
| 2026-05-25 00:00 |
18:55:43.00 |
-41:57:18.3 |
HIP 92915 |
10.42 |
| 2026-05-25 12:00 |
18:55:34.86 |
-41:57:51.1 |
HIP 92915 |
10.23 |
| 2026-05-26 00:00 |
18:55:26.66 |
-41:58:23.6 |
HIP 92915 |
10.31 |
| 2026-05-26 12:00 |
18:55:18.39 |
-41:58:55.8 |
HIP 92915 |
10.64 |
| 2026-05-27 00:00 |
18:55:10.05 |
-41:59:27.8 |
HIP 92802 |
10.09 |
| 2026-05-27 12:00 |
18:55:01.64 |
-41:59:59.5 |
HIP 92802 |
8.70 |
| 2026-05-28 00:00 |
18:54:53.17 |
-42:00:30.9 |
HIP 92802 |
7.40 |
| 2026-05-28 12:00 |
18:54:44.63 |
-42:01:02.1 |
HIP 92802 |
6.29 |
| 2026-05-29 00:00 |
18:54:36.03 |
-42:01:32.9 |
HIP 92802 |
5.46 |
| 2026-05-29 12:00 |
18:54:27.36 |
-42:02:03.5 |
HIP 92802 |
5.08 |
| 2026-05-30 00:00 |
18:54:18.63 |
-42:02:33.8 |
HIP 92802 |
5.26 |
| 2026-05-30 12:00 |
18:54:09.84 |
-42:03:03.8 |
HIP 92802 |
5.94 |
| 2026-05-31 00:00 |
18:54:00.99 |
-42:03:33.5 |
HIP 92802 |
7.00 |
| 2026-05-31 12:00 |
18:53:52.08 |
-42:04:02.9 |
HIP 92802 |
8.29 |
| 2026-06-01 00:00 |
18:53:43.11 |
-42:04:32.0 |
HIP 92802 |
9.73 |
| 2026-06-01 12:00 |
18:53:34.08 |
-42:05:00.8 |
HIP 92802 |
11.27 |
| 2026-06-02 00:00 |
18:53:25.00 |
-42:05:29.3 |
HIP 92633 |
11.85 |