메타데이터
| 항목 |
값 |
| Designation |
C/2022 U3 (Bok) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2024-07-28T01:29:51.809280Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T14:42:53Z |
| Obs used |
803 |
| NEO |
- |
| M1 |
8.800 |
| K1 |
8.500 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2022-10-31T06:16:30.662400Z |
| Discovery magnitude (MPC) |
19.66 G |
| Discovery observatory (MPC) |
V00 · Kitt Peak-Bok |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2023-12-18.0000000 |
| e |
1.00318343 |
| q (au) |
4.826915 |
| a (au) |
-1516.261844 |
| i (deg) |
33.638233 |
| Ω (om, deg) |
272.788587 |
| ω (w, deg) |
189.047254 |
| M (ma, deg) |
-0.003724 |
밝기
산란 + 전체 선형
$$
M_a = (7.781 + 3.427\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.781 |
| n |
3.427 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2021-06-23 |
2024-04-10 |
+2.0797 |
-1.688 |
| 2024-09-14 |
2026-02-07 |
+7.5196 |
-4.311 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
09:45:37.38 |
-21:34:10.3 |
HIP 47910 |
11.87 |
| 2026-06-01 12:00 |
09:45:49.08 |
-21:33:22.6 |
HIP 47931 |
11.53 |
| 2026-06-02 00:00 |
09:46:00.88 |
-21:32:35.9 |
HIP 47931 |
10.24 |
| 2026-06-02 12:00 |
09:46:12.78 |
-21:31:50.2 |
HIP 47931 |
9.67 |
| 2026-06-03 00:00 |
09:46:24.79 |
-21:31:05.4 |
HIP 47931 |
9.96 |
| 2026-06-03 12:00 |
09:46:36.89 |
-21:30:21.6 |
HIP 47931 |
11.06 |
| 2026-06-04 00:00 |
09:46:49.10 |
-21:29:38.7 |
HIP 47931 |
12.77 |
| 2026-06-04 12:00 |
09:47:01.41 |
-21:28:56.9 |
HIP 48005 |
13.18 |
| 2026-06-05 00:00 |
09:47:13.82 |
-21:28:16.0 |
HIP 48005 |
13.85 |
| 2026-06-05 12:00 |
09:47:26.33 |
-21:27:36.1 |
HIP 48005 |
15.07 |
| 2026-06-06 00:00 |
09:47:38.94 |
-21:26:57.1 |
HIP 48005 |
16.73 |
| 2026-06-06 12:00 |
09:47:51.64 |
-21:26:19.2 |
HIP 48005 |
18.73 |
| 2026-06-07 00:00 |
09:48:04.45 |
-21:25:42.3 |
HIP 48005 |
20.98 |
| 2026-06-07 12:00 |
09:48:17.35 |
-21:25:06.3 |
HIP 48005 |
23.41 |
| 2026-06-08 00:00 |
09:48:30.34 |
-21:24:31.3 |
HIP 48005 |
25.97 |
| 2026-06-08 12:00 |
09:48:43.43 |
-21:23:57.3 |
HIP 48231 |
24.17 |
| 2026-06-09 00:00 |
09:48:56.62 |
-21:23:24.4 |
HIP 48231 |
21.58 |
| 2026-06-09 12:00 |
09:49:09.90 |
-21:22:52.4 |
HIP 48231 |
19.15 |
| 2026-06-10 00:00 |
09:49:23.27 |
-21:22:21.4 |
HIP 48231 |
16.97 |
| 2026-06-10 12:00 |
09:49:36.74 |
-21:21:51.4 |
HIP 48231 |
15.13 |
| 2026-06-11 00:00 |
09:49:50.30 |
-21:21:22.5 |
HIP 48231 |
13.81 |
| 2026-06-11 12:00 |
09:50:03.95 |
-21:20:54.5 |
HIP 48296 |
12.46 |
| 2026-06-12 00:00 |
09:50:17.69 |
-21:20:27.5 |
HIP 48296 |
10.26 |
| 2026-06-12 12:00 |
09:50:31.52 |
-21:20:01.6 |
HIP 48296 |
8.70 |
| 2026-06-13 00:00 |
09:50:45.44 |
-21:19:36.7 |
HIP 48296 |
8.19 |
| 2026-06-13 12:00 |
09:50:59.45 |
-21:19:12.8 |
HIP 48296 |
8.92 |
| 2026-06-14 00:00 |
09:51:13.54 |
-21:18:49.9 |
HIP 48296 |
10.65 |
| 2026-06-14 12:00 |
09:51:27.73 |
-21:18:28.0 |
HIP 48296 |
13.01 |
| 2026-06-15 00:00 |
09:51:42.00 |
-21:18:07.2 |
HIP 48296 |
15.73 |
| 2026-06-15 12:00 |
09:51:56.36 |
-21:17:47.3 |
HIP 48296 |
18.66 |
| 2026-06-16 00:00 |
09:52:10.80 |
-21:17:28.5 |
HIP 48323 |
20.95 |
| 2026-06-16 12:00 |
09:52:25.32 |
-21:17:10.8 |
HIP 48323 |
23.49 |
| 2026-06-17 00:00 |
09:52:39.93 |
-21:16:54.0 |
HIP 48323 |
26.25 |
| 2026-06-17 12:00 |
09:52:54.62 |
-21:16:38.3 |
HIP 48480 |
28.99 |
| 2026-06-18 00:00 |
09:53:09.39 |
-21:16:23.6 |
HIP 48480 |
28.38 |
| 2026-06-18 12:00 |
09:53:24.25 |
-21:16:09.9 |
HIP 48480 |
28.20 |
| 2026-06-19 00:00 |
09:53:39.18 |
-21:15:57.3 |
HIP 48480 |
28.46 |
| 2026-06-19 12:00 |
09:53:54.19 |
-21:15:45.7 |
HIP 48480 |
29.17 |
| 2026-06-20 00:00 |
09:54:09.29 |
-21:15:35.1 |
HIP 48480 |
30.29 |
| 2026-06-20 12:00 |
09:54:24.45 |
-21:15:25.5 |
HIP 48747 |
30.17 |
| 2026-06-21 00:00 |
09:54:39.70 |
-21:15:17.0 |
HIP 48747 |
26.62 |
| 2026-06-21 12:00 |
09:54:55.02 |
-21:15:09.4 |
HIP 48747 |
23.05 |
| 2026-06-22 00:00 |
09:55:10.42 |
-21:15:02.9 |
HIP 48747 |
19.47 |