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) |
| 2026-05-12 00:00 |
03:22:44.30 |
-55:36:00.6 |
HIP 15773 |
21.35 |
| 2026-05-12 12:00 |
03:22:49.65 |
-55:35:58.1 |
HIP 15773 |
21.25 |
| 2026-05-13 00:00 |
03:22:55.01 |
-55:35:55.9 |
HIP 15773 |
21.16 |
| 2026-05-13 12:00 |
03:23:00.38 |
-55:35:54.0 |
HIP 15773 |
21.10 |
| 2026-05-14 00:00 |
03:23:05.74 |
-55:35:52.5 |
HIP 15773 |
21.06 |
| 2026-05-14 12:00 |
03:23:11.10 |
-55:35:51.4 |
HIP 15773 |
21.04 |
| 2026-05-15 00:00 |
03:23:16.46 |
-55:35:50.6 |
HIP 15773 |
21.05 |
| 2026-05-15 12:00 |
03:23:21.82 |
-55:35:50.2 |
HIP 15773 |
21.07 |
| 2026-05-16 00:00 |
03:23:27.18 |
-55:35:50.1 |
HIP 15773 |
21.11 |
| 2026-05-16 12:00 |
03:23:32.54 |
-55:35:50.4 |
HIP 15773 |
21.18 |
| 2026-05-17 00:00 |
03:23:37.90 |
-55:35:51.0 |
HIP 15773 |
21.26 |
| 2026-05-17 12:00 |
03:23:43.26 |
-55:35:52.0 |
HIP 15773 |
21.37 |
| 2026-05-18 00:00 |
03:23:48.61 |
-55:35:53.4 |
HIP 15773 |
21.49 |
| 2026-05-18 12:00 |
03:23:53.96 |
-55:35:55.1 |
HIP 15773 |
21.64 |
| 2026-05-19 00:00 |
03:23:59.31 |
-55:35:57.2 |
HIP 15773 |
21.80 |
| 2026-05-19 12:00 |
03:24:04.66 |
-55:35:59.6 |
HIP 15773 |
21.99 |
| 2026-05-20 00:00 |
03:24:10.00 |
-55:36:02.4 |
HIP 15773 |
22.19 |
| 2026-05-20 12:00 |
03:24:15.34 |
-55:36:05.5 |
HIP 15773 |
22.41 |
| 2026-05-21 00:00 |
03:24:20.67 |
-55:36:09.0 |
HIP 16055 |
21.99 |
| 2026-05-21 12:00 |
03:24:26.00 |
-55:36:12.8 |
HIP 16055 |
21.32 |
| 2026-05-22 00:00 |
03:24:31.33 |
-55:36:17.0 |
HIP 16055 |
20.65 |
| 2026-05-22 12:00 |
03:24:36.65 |
-55:36:21.6 |
HIP 16055 |
19.99 |
| 2026-05-23 00:00 |
03:24:41.96 |
-55:36:26.5 |
HIP 16055 |
19.35 |
| 2026-05-23 12:00 |
03:24:47.27 |
-55:36:31.8 |
HIP 16055 |
18.71 |
| 2026-05-24 00:00 |
03:24:52.57 |
-55:36:37.4 |
HIP 16055 |
18.09 |
| 2026-05-24 12:00 |
03:24:57.87 |
-55:36:43.3 |
HIP 16055 |
17.49 |
| 2026-05-25 00:00 |
03:25:03.16 |
-55:36:49.7 |
HIP 16055 |
16.89 |
| 2026-05-25 12:00 |
03:25:08.44 |
-55:36:56.3 |
HIP 16055 |
16.32 |
| 2026-05-26 00:00 |
03:25:13.72 |
-55:37:03.4 |
HIP 16055 |
15.77 |
| 2026-05-26 12:00 |
03:25:18.98 |
-55:37:10.7 |
HIP 16055 |
15.23 |
| 2026-05-27 00:00 |
03:25:24.24 |
-55:37:18.5 |
HIP 16055 |
14.72 |
| 2026-05-27 12:00 |
03:25:29.49 |
-55:37:26.5 |
HIP 16055 |
14.24 |
| 2026-05-28 00:00 |
03:25:34.74 |
-55:37:34.9 |
HIP 16055 |
13.79 |
| 2026-05-28 12:00 |
03:25:39.97 |
-55:37:43.7 |
HIP 16055 |
13.37 |
| 2026-05-29 00:00 |
03:25:45.20 |
-55:37:52.8 |
HIP 16055 |
12.99 |
| 2026-05-29 12:00 |
03:25:50.41 |
-55:38:02.3 |
HIP 16055 |
12.64 |
| 2026-05-30 00:00 |
03:25:55.62 |
-55:38:12.1 |
HIP 16055 |
12.34 |
| 2026-05-30 12:00 |
03:26:00.81 |
-55:38:22.3 |
HIP 16055 |
12.08 |
| 2026-05-31 00:00 |
03:26:06.00 |
-55:38:32.8 |
HIP 16055 |
11.87 |
| 2026-05-31 12:00 |
03:26:11.17 |
-55:38:43.6 |
HIP 16055 |
11.71 |
| 2026-06-01 00:00 |
03:26:16.34 |
-55:38:54.8 |
HIP 16055 |
11.60 |
| 2026-06-01 12:00 |
03:26:21.49 |
-55:39:06.3 |
HIP 16055 |
11.55 |
| 2026-06-02 00:00 |
03:26:26.63 |
-55:39:18.2 |
HIP 16055 |
11.56 |