메타데이터
| 항목 |
값 |
| Designation |
C/2010 B1 (Cardinal) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-02-07T01:26:00.456000Z |
| Orbit solution date (soln_date, UTC) |
2025-06-26T10:12:44Z |
| Obs used |
2090 |
| NEO |
- |
| M1 |
9.600 |
| K1 |
7.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2010-10-26.0000000 |
| e |
0.99899435 |
| q (au) |
2.941487 |
| a (au) |
2924.960222 |
| i (deg) |
101.977683 |
| Ω (om, deg) |
277.213907 |
| ω (w, deg) |
211.519913 |
| M (ma, deg) |
359.999352 |
밝기
산란 + 전체 선형
$$
M_a = (10.297 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.297 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-0.709 |
| 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 |
| 2010-01-19 |
2010-08-30 |
+4.8225 |
-3.111 |
| 2010-08-30 |
2011-02-06 |
-10.8522 |
+5.203 |
| 2011-02-07 |
2012-02-12 |
+3.6110 |
-1.630 |
| 2012-02-12 |
2014-03-13 |
-14.7522 |
+11.129 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
18:44:04.12 |
-26:48:24.6 |
HIP 91750 |
23.37 |
| 2026-03-26 12:00 |
18:44:04.42 |
-26:48:23.7 |
HIP 91750 |
23.42 |
| 2026-03-27 00:00 |
18:44:04.69 |
-26:48:22.9 |
HIP 91750 |
23.46 |
| 2026-03-27 12:00 |
18:44:04.92 |
-26:48:22.1 |
HIP 91750 |
23.50 |
| 2026-03-28 00:00 |
18:44:05.11 |
-26:48:21.4 |
HIP 91750 |
23.53 |
| 2026-03-28 12:00 |
18:44:05.27 |
-26:48:20.7 |
HIP 91750 |
23.55 |
| 2026-03-29 00:00 |
18:44:05.39 |
-26:48:20.1 |
HIP 91750 |
23.57 |
| 2026-03-29 12:00 |
18:44:05.47 |
-26:48:19.4 |
HIP 91750 |
23.58 |
| 2026-03-30 00:00 |
18:44:05.52 |
-26:48:18.9 |
HIP 91750 |
23.58 |
| 2026-03-30 12:00 |
18:44:05.54 |
-26:48:18.3 |
HIP 91750 |
23.58 |
| 2026-03-31 00:00 |
18:44:05.51 |
-26:48:17.8 |
HIP 91750 |
23.57 |
| 2026-03-31 12:00 |
18:44:05.46 |
-26:48:17.3 |
HIP 91750 |
23.56 |
| 2026-04-01 00:00 |
18:44:05.36 |
-26:48:16.9 |
HIP 91750 |
23.54 |
| 2026-04-01 12:00 |
18:44:05.23 |
-26:48:16.5 |
HIP 91750 |
23.51 |
| 2026-04-02 00:00 |
18:44:05.07 |
-26:48:16.1 |
HIP 91750 |
23.47 |
| 2026-04-02 12:00 |
18:44:04.87 |
-26:48:15.8 |
HIP 91750 |
23.43 |
| 2026-04-03 00:00 |
18:44:04.63 |
-26:48:15.5 |
HIP 91750 |
23.38 |
| 2026-04-03 12:00 |
18:44:04.36 |
-26:48:15.2 |
HIP 91750 |
23.33 |
| 2026-04-04 00:00 |
18:44:04.05 |
-26:48:15.0 |
HIP 91750 |
23.27 |
| 2026-04-04 12:00 |
18:44:03.70 |
-26:48:14.8 |
HIP 91750 |
23.20 |
| 2026-04-05 00:00 |
18:44:03.32 |
-26:48:14.7 |
HIP 91750 |
23.13 |
| 2026-04-05 12:00 |
18:44:02.91 |
-26:48:14.5 |
HIP 91750 |
23.05 |
| 2026-04-06 00:00 |
18:44:02.45 |
-26:48:14.4 |
HIP 91750 |
22.96 |
| 2026-04-06 12:00 |
18:44:01.97 |
-26:48:14.4 |
HIP 91750 |
22.87 |
| 2026-04-07 00:00 |
18:44:01.44 |
-26:48:14.3 |
HIP 91750 |
22.77 |
| 2026-04-07 12:00 |
18:44:00.88 |
-26:48:14.4 |
HIP 91750 |
22.66 |
| 2026-04-08 00:00 |
18:44:00.29 |
-26:48:14.4 |
HIP 91750 |
22.55 |
| 2026-04-08 12:00 |
18:43:59.66 |
-26:48:14.5 |
HIP 91750 |
22.43 |
| 2026-04-09 00:00 |
18:43:58.99 |
-26:48:14.6 |
HIP 91750 |
22.31 |
| 2026-04-09 12:00 |
18:43:58.29 |
-26:48:14.7 |
HIP 91750 |
22.17 |
| 2026-04-10 00:00 |
18:43:57.55 |
-26:48:14.9 |
HIP 91750 |
22.04 |
| 2026-04-10 12:00 |
18:43:56.77 |
-26:48:15.0 |
HIP 91750 |
21.89 |
| 2026-04-11 00:00 |
18:43:55.96 |
-26:48:15.3 |
HIP 91750 |
21.74 |
| 2026-04-11 12:00 |
18:43:55.12 |
-26:48:15.5 |
HIP 91750 |
21.59 |
| 2026-04-12 00:00 |
18:43:54.24 |
-26:48:15.8 |
HIP 91750 |
21.43 |
| 2026-04-12 12:00 |
18:43:53.32 |
-26:48:16.1 |
HIP 91750 |
21.26 |
| 2026-04-13 00:00 |
18:43:52.37 |
-26:48:16.5 |
HIP 91750 |
21.09 |
| 2026-04-13 12:00 |
18:43:51.38 |
-26:48:16.8 |
HIP 91750 |
20.91 |
| 2026-04-14 00:00 |
18:43:50.36 |
-26:48:17.2 |
HIP 91750 |
20.73 |
| 2026-04-14 12:00 |
18:43:49.30 |
-26:48:17.6 |
HIP 91750 |
20.54 |
| 2026-04-15 00:00 |
18:43:48.20 |
-26:48:18.1 |
HIP 91750 |
20.35 |
| 2026-04-15 12:00 |
18:43:47.07 |
-26:48:18.6 |
HIP 91750 |
20.15 |
| 2026-04-16 00:00 |
18:43:45.91 |
-26:48:19.1 |
HIP 91750 |
19.95 |