메타데이터
| 항목 |
값 |
| Designation |
C/2019 B3 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2021-01-20T04:27:17.818560Z |
| Orbit solution date (soln_date, UTC) |
2024-05-14T12:42:17Z |
| Obs used |
293 |
| NEO |
- |
| M1 |
6.500 |
| K1 |
8.750 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2019-01-24T13:55:58.656000Z |
| Discovery magnitude (MPC) |
19.60 i |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2021-06-17.0000000 |
| e |
1.00210415 |
| q (au) |
6.823022 |
| a (au) |
-3242.642558 |
| i (deg) |
66.536192 |
| Ω (om, deg) |
358.432372 |
| ω (w, deg) |
263.923054 |
| M (ma, deg) |
0.000789 |
밝기
산란 + 전체 선형
$$
M_a = (3.014 + 4.873\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
3.014 |
| n |
4.873 |
| gf |
0.911 |
| gb |
-0.565 |
| k |
1.000 |
| δ90 |
1.000 |
| 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 |
| 2019-01-24 |
2020-11-22 |
+7.1897 |
-6.267 |
| 2021-01-29 |
2022-11-05 |
-12.7161 |
+10.938 |
| 2022-11-05 |
2023-10-18 |
+29.4531 |
-27.381 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
23:54:36.59 |
-04:44:50.5 |
HIP 117926 |
9.10 |
| 2026-09-20 12:00 |
23:54:28.35 |
-04:45:08.5 |
HIP 117926 |
11.04 |
| 2026-09-21 00:00 |
23:54:20.12 |
-04:45:26.4 |
HIP 117926 |
13.02 |
| 2026-09-21 12:00 |
23:54:11.88 |
-04:45:44.3 |
HIP 117926 |
15.02 |
| 2026-09-22 00:00 |
23:54:03.65 |
-04:46:02.0 |
HIP 117926 |
17.04 |
| 2026-09-22 12:00 |
23:53:55.43 |
-04:46:19.6 |
HIP 117926 |
19.07 |
| 2026-09-23 00:00 |
23:53:47.20 |
-04:46:37.2 |
HIP 117926 |
21.10 |
| 2026-09-23 12:00 |
23:53:38.99 |
-04:46:54.6 |
HIP 117926 |
23.14 |
| 2026-09-24 00:00 |
23:53:30.78 |
-04:47:11.9 |
HIP 117926 |
25.18 |
| 2026-09-24 12:00 |
23:53:22.57 |
-04:47:29.1 |
HIP 117926 |
27.22 |
| 2026-09-25 00:00 |
23:53:14.38 |
-04:47:46.2 |
HIP 117926 |
29.27 |
| 2026-09-25 12:00 |
23:53:06.19 |
-04:48:03.2 |
HIP 117926 |
31.31 |
| 2026-09-26 00:00 |
23:52:58.01 |
-04:48:20.0 |
HIP 117780 |
31.85 |
| 2026-09-26 12:00 |
23:52:49.84 |
-04:48:36.7 |
HIP 117780 |
31.79 |
| 2026-09-27 00:00 |
23:52:41.68 |
-04:48:53.3 |
HIP 117780 |
31.87 |
| 2026-09-27 12:00 |
23:52:33.53 |
-04:49:09.7 |
HIP 117780 |
32.09 |
| 2026-09-28 00:00 |
23:52:25.40 |
-04:49:26.0 |
HIP 117780 |
32.43 |
| 2026-09-28 12:00 |
23:52:17.27 |
-04:49:42.2 |
HIP 117780 |
32.90 |
| 2026-09-29 00:00 |
23:52:09.16 |
-04:49:58.2 |
HIP 117780 |
33.48 |
| 2026-09-29 12:00 |
23:52:01.06 |
-04:50:14.0 |
HIP 117780 |
34.18 |
| 2026-09-30 00:00 |
23:51:52.98 |
-04:50:29.7 |
HIP 117780 |
34.99 |
| 2026-09-30 12:00 |
23:51:44.91 |
-04:50:45.2 |
HIP 117780 |
35.89 |
| 2026-10-01 00:00 |
23:51:36.86 |
-04:51:00.6 |
HIP 117780 |
36.87 |
| 2026-10-01 12:00 |
23:51:28.82 |
-04:51:15.8 |
HIP 117780 |
37.95 |
| 2026-10-02 00:00 |
23:51:20.81 |
-04:51:30.8 |
HIP 117780 |
39.09 |
| 2026-10-02 12:00 |
23:51:12.81 |
-04:51:45.7 |
HIP 117780 |
40.30 |
| 2026-10-03 00:00 |
23:51:04.82 |
-04:52:00.3 |
HIP 117780 |
41.57 |
| 2026-10-03 12:00 |
23:50:56.86 |
-04:52:14.8 |
HIP 117438 |
41.96 |
| 2026-10-04 00:00 |
23:50:48.92 |
-04:52:29.1 |
HIP 117438 |
40.58 |
| 2026-10-04 12:00 |
23:50:41.00 |
-04:52:43.3 |
HIP 117438 |
39.26 |
| 2026-10-05 00:00 |
23:50:33.10 |
-04:52:57.2 |
HIP 117438 |
38.00 |
| 2026-10-05 12:00 |
23:50:25.22 |
-04:53:10.9 |
HIP 117438 |
36.80 |
| 2026-10-06 00:00 |
23:50:17.36 |
-04:53:24.4 |
HIP 117438 |
35.68 |
| 2026-10-06 12:00 |
23:50:09.53 |
-04:53:37.7 |
HIP 117438 |
34.63 |
| 2026-10-07 00:00 |
23:50:01.72 |
-04:53:50.8 |
HIP 117438 |
33.66 |
| 2026-10-07 12:00 |
23:49:53.94 |
-04:54:03.7 |
HIP 117438 |
32.79 |
| 2026-10-08 00:00 |
23:49:46.18 |
-04:54:16.4 |
HIP 117438 |
32.01 |
| 2026-10-08 12:00 |
23:49:38.45 |
-04:54:28.9 |
HIP 117438 |
31.32 |
| 2026-10-09 00:00 |
23:49:30.75 |
-04:54:41.1 |
HIP 117438 |
30.75 |
| 2026-10-09 12:00 |
23:49:23.08 |
-04:54:53.1 |
HIP 117364 |
30.26 |
| 2026-10-10 00:00 |
23:49:15.43 |
-04:55:04.8 |
HIP 117364 |
28.71 |
| 2026-10-10 12:00 |
23:49:07.82 |
-04:55:16.4 |
HIP 117364 |
27.21 |
| 2026-10-11 00:00 |
23:49:00.23 |
-04:55:27.6 |
HIP 117364 |
25.78 |