메타데이터
| 항목 |
값 |
| Designation |
C/2005 B1 (Christensen) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-02-23T13:43:37.490880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:46Z |
| Obs used |
1486 |
| NEO |
- |
| M1 |
11.500 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2006-01-10.0000000 |
| e |
1.00019141 |
| q (au) |
3.204932 |
| a (au) |
-16744.183157 |
| i (deg) |
92.551160 |
| Ω (om, deg) |
195.556048 |
| ω (w, deg) |
103.182514 |
| M (ma, deg) |
-0.000020 |
밝기
산란 + 전체 선형
$$
M_a = (9.992 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.992 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-0.762 |
| 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 |
| 2004-03-18 |
2006-02-03 |
+3.8130 |
-2.553 |
| 2006-03-02 |
2007-11-03 |
+0.9425 |
-0.298 |
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 |
03:15:11.43 |
-56:04:33.4 |
HIP 15033 |
12.56 |
| 2026-03-26 12:00 |
03:15:15.26 |
-56:04:01.6 |
HIP 15033 |
13.08 |
| 2026-03-27 00:00 |
03:15:19.13 |
-56:03:30.0 |
HIP 15033 |
13.62 |
| 2026-03-27 12:00 |
03:15:23.03 |
-56:02:58.7 |
HIP 15033 |
14.19 |
| 2026-03-28 00:00 |
03:15:26.95 |
-56:02:27.7 |
HIP 15033 |
14.78 |
| 2026-03-28 12:00 |
03:15:30.91 |
-56:01:56.9 |
HIP 15033 |
15.39 |
| 2026-03-29 00:00 |
03:15:34.89 |
-56:01:26.3 |
HIP 15033 |
16.01 |
| 2026-03-29 12:00 |
03:15:38.90 |
-56:00:56.0 |
HIP 15033 |
16.65 |
| 2026-03-30 00:00 |
03:15:42.94 |
-56:00:25.9 |
HIP 15033 |
17.30 |
| 2026-03-30 12:00 |
03:15:47.01 |
-55:59:56.1 |
HIP 15033 |
17.96 |
| 2026-03-31 00:00 |
03:15:51.11 |
-55:59:26.6 |
HIP 15033 |
18.63 |
| 2026-03-31 12:00 |
03:15:55.24 |
-55:58:57.3 |
HIP 15033 |
19.31 |
| 2026-04-01 00:00 |
03:15:59.39 |
-55:58:28.3 |
HIP 15033 |
20.00 |
| 2026-04-01 12:00 |
03:16:03.57 |
-55:57:59.5 |
HIP 15033 |
20.70 |
| 2026-04-02 00:00 |
03:16:07.77 |
-55:57:31.0 |
HIP 15389 |
20.86 |
| 2026-04-02 12:00 |
03:16:12.00 |
-55:57:02.8 |
HIP 15389 |
20.14 |
| 2026-04-03 00:00 |
03:16:16.26 |
-55:56:34.8 |
HIP 15389 |
19.41 |
| 2026-04-03 12:00 |
03:16:20.55 |
-55:56:07.1 |
HIP 15389 |
18.68 |
| 2026-04-04 00:00 |
03:16:24.86 |
-55:55:39.7 |
HIP 15389 |
17.96 |
| 2026-04-04 12:00 |
03:16:29.19 |
-55:55:12.5 |
HIP 15389 |
17.23 |
| 2026-04-05 00:00 |
03:16:33.55 |
-55:54:45.6 |
HIP 15389 |
16.51 |
| 2026-04-05 12:00 |
03:16:37.94 |
-55:54:19.0 |
HIP 15389 |
15.78 |
| 2026-04-06 00:00 |
03:16:42.35 |
-55:53:52.7 |
HIP 15389 |
15.06 |
| 2026-04-06 12:00 |
03:16:46.78 |
-55:53:26.6 |
HIP 15389 |
14.34 |
| 2026-04-07 00:00 |
03:16:51.24 |
-55:53:00.9 |
HIP 15389 |
13.62 |
| 2026-04-07 12:00 |
03:16:55.72 |
-55:52:35.4 |
HIP 15389 |
12.90 |
| 2026-04-08 00:00 |
03:17:00.22 |
-55:52:10.2 |
HIP 15389 |
12.19 |
| 2026-04-08 12:00 |
03:17:04.75 |
-55:51:45.2 |
HIP 15389 |
11.48 |
| 2026-04-09 00:00 |
03:17:09.30 |
-55:51:20.6 |
HIP 15389 |
10.77 |
| 2026-04-09 12:00 |
03:17:13.88 |
-55:50:56.3 |
HIP 15389 |
10.07 |
| 2026-04-10 00:00 |
03:17:18.47 |
-55:50:32.2 |
HIP 15389 |
9.38 |
| 2026-04-10 12:00 |
03:17:23.09 |
-55:50:08.5 |
HIP 15389 |
8.69 |
| 2026-04-11 00:00 |
03:17:27.73 |
-55:49:45.0 |
HIP 15389 |
8.01 |
| 2026-04-11 12:00 |
03:17:32.39 |
-55:49:21.8 |
HIP 15389 |
7.35 |
| 2026-04-12 00:00 |
03:17:37.07 |
-55:48:59.0 |
HIP 15389 |
6.70 |
| 2026-04-12 12:00 |
03:17:41.77 |
-55:48:36.4 |
HIP 15389 |
6.08 |
| 2026-04-13 00:00 |
03:17:46.50 |
-55:48:14.1 |
HIP 15389 |
5.48 |
| 2026-04-13 12:00 |
03:17:51.24 |
-55:47:52.2 |
HIP 15389 |
4.93 |
| 2026-04-14 00:00 |
03:17:56.00 |
-55:47:30.5 |
HIP 15389 |
4.43 |
| 2026-04-14 12:00 |
03:18:00.79 |
-55:47:09.2 |
HIP 15389 |
4.02 |
| 2026-04-15 00:00 |
03:18:05.59 |
-55:46:48.1 |
HIP 15389 |
3.70 |
| 2026-04-15 12:00 |
03:18:10.41 |
-55:46:27.4 |
HIP 15389 |
3.52 |
| 2026-04-16 00:00 |
03:18:15.25 |
-55:46:07.0 |
HIP 15389 |
3.50 |