메타데이터
| 항목 |
값 |
| Designation |
P/2022 B1 (Wierzchos) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-02-25T08:09:18.426240Z |
| Orbit solution date (soln_date, UTC) |
2022-05-19T21:13:41Z |
| Obs used |
77 |
| NEO |
- |
| M1 |
9.800 |
| K1 |
34.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-01-25T05:00:25.027200Z |
| Discovery magnitude (MPC) |
19.82 G |
| Discovery observatory (MPC) |
G96 · University of Arizona Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-01-17.0000000 |
| e |
0.65283630 |
| q (au) |
1.896707 |
| a (au) |
5.463438 |
| i (deg) |
10.990904 |
| Ω (om, deg) |
148.849791 |
| ω (w, deg) |
325.482098 |
| M (ma, deg) |
356.963752 |
밝기
산란 + 전체 선형
$$
M_a = (14.533 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.533 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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 |
| 2021-10-30 |
2022-02-09 |
+18.7304 |
-5.466 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
18:20:55.95 |
-13:52:27.0 |
HIP 89753 |
29.31 |
| 2026-07-29 12:00 |
18:20:45.86 |
-13:52:58.0 |
HIP 89753 |
26.81 |
| 2026-07-30 00:00 |
18:20:35.86 |
-13:53:29.2 |
HIP 89753 |
24.33 |
| 2026-07-30 12:00 |
18:20:25.94 |
-13:54:00.5 |
HIP 89753 |
21.86 |
| 2026-07-31 00:00 |
18:20:16.10 |
-13:54:32.0 |
HIP 89753 |
19.42 |
| 2026-07-31 12:00 |
18:20:06.35 |
-13:55:03.7 |
HIP 89753 |
17.00 |
| 2026-08-01 00:00 |
18:19:56.69 |
-13:55:35.5 |
HIP 89753 |
14.60 |
| 2026-08-01 12:00 |
18:19:47.11 |
-13:56:07.5 |
HIP 89753 |
12.22 |
| 2026-08-02 00:00 |
18:19:37.62 |
-13:56:39.6 |
HIP 89753 |
9.85 |
| 2026-08-02 12:00 |
18:19:28.22 |
-13:57:11.9 |
HIP 89753 |
7.52 |
| 2026-08-03 00:00 |
18:19:18.91 |
-13:57:44.4 |
HIP 89753 |
5.20 |
| 2026-08-03 12:00 |
18:19:09.69 |
-13:58:17.0 |
HIP 89753 |
2.92 |
| 2026-08-04 00:00 |
18:19:00.56 |
-13:58:49.7 |
HIP 89753 |
0.79 |
| 2026-08-04 12:00 |
18:18:51.53 |
-13:59:22.6 |
HIP 89753 |
1.74 |
| 2026-08-05 00:00 |
18:18:42.58 |
-13:59:55.7 |
HIP 89753 |
3.93 |
| 2026-08-05 12:00 |
18:18:33.74 |
-14:00:28.9 |
HIP 89753 |
6.14 |
| 2026-08-06 00:00 |
18:18:24.98 |
-14:01:02.2 |
HIP 89753 |
8.32 |
| 2026-08-06 12:00 |
18:18:16.33 |
-14:01:35.7 |
HIP 89753 |
10.49 |
| 2026-08-07 00:00 |
18:18:07.77 |
-14:02:09.2 |
HIP 89753 |
12.64 |
| 2026-08-07 12:00 |
18:17:59.31 |
-14:02:43.0 |
HIP 89753 |
14.76 |
| 2026-08-08 00:00 |
18:17:50.95 |
-14:03:16.8 |
HIP 89753 |
16.87 |
| 2026-08-08 12:00 |
18:17:42.68 |
-14:03:50.8 |
HIP 89753 |
18.95 |
| 2026-08-09 00:00 |
18:17:34.52 |
-14:04:24.9 |
HIP 89753 |
21.00 |
| 2026-08-09 12:00 |
18:17:26.46 |
-14:04:59.2 |
HIP 89634 |
22.19 |
| 2026-08-10 00:00 |
18:17:18.51 |
-14:05:33.5 |
HIP 89634 |
21.81 |
| 2026-08-10 12:00 |
18:17:10.65 |
-14:06:08.0 |
HIP 89519 |
20.59 |
| 2026-08-11 00:00 |
18:17:02.90 |
-14:06:42.6 |
HIP 89519 |
18.74 |
| 2026-08-11 12:00 |
18:16:55.26 |
-14:07:17.3 |
HIP 89519 |
16.95 |
| 2026-08-12 00:00 |
18:16:47.72 |
-14:07:52.1 |
HIP 89519 |
15.20 |
| 2026-08-12 12:00 |
18:16:40.29 |
-14:08:27.0 |
HIP 89519 |
13.52 |
| 2026-08-13 00:00 |
18:16:32.96 |
-14:09:02.0 |
HIP 89519 |
11.92 |
| 2026-08-13 12:00 |
18:16:25.74 |
-14:09:37.1 |
HIP 89519 |
10.42 |
| 2026-08-14 00:00 |
18:16:18.64 |
-14:10:12.3 |
HIP 89519 |
9.06 |
| 2026-08-14 12:00 |
18:16:11.64 |
-14:10:47.6 |
HIP 89519 |
7.89 |
| 2026-08-15 00:00 |
18:16:04.75 |
-14:11:23.0 |
HIP 89519 |
7.00 |
| 2026-08-15 12:00 |
18:15:57.97 |
-14:11:58.5 |
HIP 89519 |
6.46 |
| 2026-08-16 00:00 |
18:15:51.30 |
-14:12:34.1 |
HIP 89519 |
6.37 |
| 2026-08-16 12:00 |
18:15:44.75 |
-14:13:09.7 |
HIP 89519 |
6.71 |
| 2026-08-17 00:00 |
18:15:38.31 |
-14:13:45.5 |
HIP 89519 |
7.41 |
| 2026-08-17 12:00 |
18:15:31.98 |
-14:14:21.3 |
HIP 89519 |
8.36 |
| 2026-08-18 00:00 |
18:15:25.76 |
-14:14:57.2 |
HIP 89519 |
9.48 |
| 2026-08-18 12:00 |
18:15:19.66 |
-14:15:33.1 |
HIP 89519 |
10.70 |
| 2026-08-19 00:00 |
18:15:13.67 |
-14:16:09.2 |
HIP 89519 |
11.98 |