메타데이터
| 항목 |
값 |
| Designation |
C/2017 B3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2019-02-02T14:22:55.968960Z |
| Orbit solution date (soln_date, UTC) |
2022-07-31T01:42:28Z |
| Obs used |
1591 |
| NEO |
- |
| M1 |
6.300 |
| K1 |
9.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-11-01.0000000 |
| e |
1.00205503 |
| q (au) |
3.921429 |
| a (au) |
-1908.207887 |
| i (deg) |
54.177778 |
| Ω (om, deg) |
2.178286 |
| ω (w, deg) |
284.767790 |
| M (ma, deg) |
0.003209 |
밝기
산란 + 전체 선형
$$
M_a = (8.267 + 4.444\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.267 |
| n |
4.444 |
| gf |
1.000 |
| gb |
-0.790 |
| k |
0.800 |
| δ90 |
9.997 |
| 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 |
| 2016-03-04 |
2017-03-10 |
+20.0904 |
-16.483 |
| 2017-03-10 |
2019-02-01 |
+0.1708 |
+0.419 |
| 2019-03-27 |
2019-11-19 |
-14.3328 |
+9.294 |
| 2019-11-19 |
2020-11-13 |
+1.1970 |
-1.243 |
| 2020-11-13 |
2022-01-01 |
+11.4957 |
-9.995 |
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 |
01:13:41.93 |
+51:45:32.2 |
HIP 5674 |
11.98 |
| 2026-09-20 12:00 |
01:13:33.39 |
+51:45:45.7 |
HIP 5674 |
11.40 |
| 2026-09-21 00:00 |
01:13:24.81 |
+51:45:58.6 |
HIP 5674 |
10.93 |
| 2026-09-21 12:00 |
01:13:16.20 |
+51:46:10.8 |
HIP 5674 |
10.61 |
| 2026-09-22 00:00 |
01:13:07.55 |
+51:46:22.4 |
HIP 5674 |
10.44 |
| 2026-09-22 12:00 |
01:12:58.87 |
+51:46:33.3 |
HIP 5674 |
10.43 |
| 2026-09-23 00:00 |
01:12:50.16 |
+51:46:43.5 |
HIP 5674 |
10.59 |
| 2026-09-23 12:00 |
01:12:41.42 |
+51:46:53.1 |
HIP 5674 |
10.91 |
| 2026-09-24 00:00 |
01:12:32.65 |
+51:47:02.0 |
HIP 5674 |
11.37 |
| 2026-09-24 12:00 |
01:12:23.85 |
+51:47:10.3 |
HIP 5674 |
11.96 |
| 2026-09-25 00:00 |
01:12:15.02 |
+51:47:17.9 |
HIP 5674 |
12.67 |
| 2026-09-25 12:00 |
01:12:06.16 |
+51:47:24.8 |
HIP 5674 |
13.47 |
| 2026-09-26 00:00 |
01:11:57.28 |
+51:47:31.1 |
HIP 5674 |
14.36 |
| 2026-09-26 12:00 |
01:11:48.37 |
+51:47:36.7 |
HIP 5674 |
15.31 |
| 2026-09-27 00:00 |
01:11:39.43 |
+51:47:41.6 |
HIP 5480 |
14.50 |
| 2026-09-27 12:00 |
01:11:30.47 |
+51:47:45.9 |
HIP 5480 |
13.16 |
| 2026-09-28 00:00 |
01:11:21.49 |
+51:47:49.5 |
HIP 5480 |
11.83 |
| 2026-09-28 12:00 |
01:11:12.48 |
+51:47:52.4 |
HIP 5480 |
10.50 |
| 2026-09-29 00:00 |
01:11:03.45 |
+51:47:54.7 |
HIP 5480 |
9.19 |
| 2026-09-29 12:00 |
01:10:54.40 |
+51:47:56.3 |
HIP 5480 |
7.90 |
| 2026-09-30 00:00 |
01:10:45.33 |
+51:47:57.2 |
HIP 5480 |
6.64 |
| 2026-09-30 12:00 |
01:10:36.24 |
+51:47:57.5 |
HIP 5480 |
5.44 |
| 2026-10-01 00:00 |
01:10:27.13 |
+51:47:57.1 |
HIP 5480 |
4.37 |
| 2026-10-01 12:00 |
01:10:18.00 |
+51:47:56.0 |
HIP 5480 |
3.52 |
| 2026-10-02 00:00 |
01:10:08.86 |
+51:47:54.3 |
HIP 5480 |
3.11 |
| 2026-10-02 12:00 |
01:09:59.70 |
+51:47:51.9 |
HIP 5480 |
3.30 |
| 2026-10-03 00:00 |
01:09:50.52 |
+51:47:48.9 |
HIP 5480 |
4.00 |
| 2026-10-03 12:00 |
01:09:41.33 |
+51:47:45.1 |
HIP 5480 |
5.02 |
| 2026-10-04 00:00 |
01:09:32.12 |
+51:47:40.7 |
HIP 5480 |
6.19 |
| 2026-10-04 12:00 |
01:09:22.90 |
+51:47:35.7 |
HIP 5480 |
7.45 |
| 2026-10-05 00:00 |
01:09:13.67 |
+51:47:30.0 |
HIP 5480 |
8.76 |
| 2026-10-05 12:00 |
01:09:04.43 |
+51:47:23.6 |
HIP 5480 |
10.10 |
| 2026-10-06 00:00 |
01:08:55.18 |
+51:47:16.5 |
HIP 5480 |
11.47 |
| 2026-10-06 12:00 |
01:08:45.92 |
+51:47:08.8 |
HIP 5480 |
12.85 |
| 2026-10-07 00:00 |
01:08:36.65 |
+51:47:00.4 |
HIP 5476 |
14.23 |
| 2026-10-07 12:00 |
01:08:27.38 |
+51:46:51.4 |
HIP 5476 |
15.62 |
| 2026-10-08 00:00 |
01:08:18.10 |
+51:46:41.7 |
HIP 5436 |
16.79 |
| 2026-10-08 12:00 |
01:08:08.81 |
+51:46:31.4 |
HIP 5436 |
17.70 |
| 2026-10-09 00:00 |
01:07:59.52 |
+51:46:20.3 |
HIP 5436 |
18.68 |
| 2026-10-09 12:00 |
01:07:50.22 |
+51:46:08.7 |
HIP 5436 |
19.71 |
| 2026-10-10 00:00 |
01:07:40.93 |
+51:45:56.4 |
HIP 5436 |
20.78 |
| 2026-10-10 12:00 |
01:07:31.63 |
+51:45:43.4 |
HIP 5436 |
21.90 |
| 2026-10-11 00:00 |
01:07:22.33 |
+51:45:29.8 |
HIP 5436 |
23.04 |