메타데이터
| 항목 |
값 |
| Designation |
C/2006 U6 (Spacewatch) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-06-05T11:25:18.736320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:01Z |
| Obs used |
552 |
| NEO |
- |
| M1 |
10.900 |
| K1 |
5.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-04-03.0000000 |
| e |
0.99870621 |
| q (au) |
2.498397 |
| a (au) |
1931.066467 |
| i (deg) |
84.878944 |
| Ω (om, deg) |
180.186317 |
| ω (w, deg) |
276.596980 |
| M (ma, deg) |
359.999263 |
밝기
산란 + 전체 선형
$$
M_a = (13.450 + 2.405\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.450 |
| n |
2.405 |
| gf |
1.000 |
| gb |
-0.706 |
| k |
0.800 |
| 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 |
| 2006-09-15 |
2007-09-14 |
+2.5893 |
-1.956 |
| 2007-09-14 |
2008-05-08 |
-3.2129 |
+1.746 |
| 2008-06-11 |
2010-06-04 |
-0.0917 |
-0.202 |
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 |
15:02:46.55 |
+52:44:11.0 |
HIP 73463 |
26.62 |
| 2026-09-20 12:00 |
15:02:50.05 |
+52:43:35.5 |
HIP 73463 |
26.54 |
| 2026-09-21 00:00 |
15:02:53.58 |
+52:43:00.3 |
HIP 73463 |
26.49 |
| 2026-09-21 12:00 |
15:02:57.14 |
+52:42:25.3 |
HIP 73463 |
26.46 |
| 2026-09-22 00:00 |
15:03:00.74 |
+52:41:50.5 |
HIP 73463 |
26.47 |
| 2026-09-22 12:00 |
15:03:04.36 |
+52:41:16.0 |
HIP 73463 |
26.51 |
| 2026-09-23 00:00 |
15:03:08.02 |
+52:40:41.6 |
HIP 73463 |
26.58 |
| 2026-09-23 12:00 |
15:03:11.70 |
+52:40:07.5 |
HIP 73463 |
26.67 |
| 2026-09-24 00:00 |
15:03:15.41 |
+52:39:33.6 |
HIP 73463 |
26.80 |
| 2026-09-24 12:00 |
15:03:19.16 |
+52:39:00.0 |
HIP 73463 |
26.95 |
| 2026-09-25 00:00 |
15:03:22.93 |
+52:38:26.5 |
HIP 73463 |
27.14 |
| 2026-09-25 12:00 |
15:03:26.73 |
+52:37:53.2 |
HIP 73463 |
27.35 |
| 2026-09-26 00:00 |
15:03:30.56 |
+52:37:20.3 |
HIP 73895 |
27.31 |
| 2026-09-26 12:00 |
15:03:34.42 |
+52:36:47.5 |
HIP 73895 |
26.55 |
| 2026-09-27 00:00 |
15:03:38.31 |
+52:36:15.0 |
HIP 73895 |
25.78 |
| 2026-09-27 12:00 |
15:03:42.23 |
+52:35:42.7 |
HIP 73895 |
25.01 |
| 2026-09-28 00:00 |
15:03:46.17 |
+52:35:10.7 |
HIP 73895 |
24.24 |
| 2026-09-28 12:00 |
15:03:50.14 |
+52:34:38.9 |
HIP 73895 |
23.47 |
| 2026-09-29 00:00 |
15:03:54.14 |
+52:34:07.4 |
HIP 73895 |
22.71 |
| 2026-09-29 12:00 |
15:03:58.17 |
+52:33:36.1 |
HIP 73895 |
21.94 |
| 2026-09-30 00:00 |
15:04:02.22 |
+52:33:05.1 |
HIP 73895 |
21.17 |
| 2026-09-30 12:00 |
15:04:06.30 |
+52:32:34.3 |
HIP 73895 |
20.40 |
| 2026-10-01 00:00 |
15:04:10.41 |
+52:32:03.8 |
HIP 73895 |
19.63 |
| 2026-10-01 12:00 |
15:04:14.54 |
+52:31:33.5 |
HIP 73895 |
18.87 |
| 2026-10-02 00:00 |
15:04:18.70 |
+52:31:03.5 |
HIP 73895 |
18.10 |
| 2026-10-02 12:00 |
15:04:22.89 |
+52:30:33.7 |
HIP 73895 |
17.34 |
| 2026-10-03 00:00 |
15:04:27.10 |
+52:30:04.2 |
HIP 73895 |
16.58 |
| 2026-10-03 12:00 |
15:04:31.33 |
+52:29:35.0 |
HIP 73895 |
15.82 |
| 2026-10-04 00:00 |
15:04:35.60 |
+52:29:06.1 |
HIP 73895 |
15.06 |
| 2026-10-04 12:00 |
15:04:39.88 |
+52:28:37.4 |
HIP 73895 |
14.30 |
| 2026-10-05 00:00 |
15:04:44.19 |
+52:28:09.0 |
HIP 73895 |
13.55 |
| 2026-10-05 12:00 |
15:04:48.53 |
+52:27:40.9 |
HIP 73895 |
12.80 |
| 2026-10-06 00:00 |
15:04:52.89 |
+52:27:13.0 |
HIP 73895 |
12.06 |
| 2026-10-06 12:00 |
15:04:57.27 |
+52:26:45.4 |
HIP 73895 |
11.32 |
| 2026-10-07 00:00 |
15:05:01.68 |
+52:26:18.1 |
HIP 73895 |
10.59 |
| 2026-10-07 12:00 |
15:05:06.11 |
+52:25:51.1 |
HIP 73895 |
9.87 |
| 2026-10-08 00:00 |
15:05:10.57 |
+52:25:24.4 |
HIP 73895 |
9.16 |
| 2026-10-08 12:00 |
15:05:15.04 |
+52:24:58.0 |
HIP 73895 |
8.47 |
| 2026-10-09 00:00 |
15:05:19.54 |
+52:24:31.8 |
HIP 73895 |
7.80 |
| 2026-10-09 12:00 |
15:05:24.06 |
+52:24:06.0 |
HIP 73895 |
7.15 |
| 2026-10-10 00:00 |
15:05:28.61 |
+52:23:40.5 |
HIP 73895 |
6.53 |
| 2026-10-10 12:00 |
15:05:33.17 |
+52:23:15.2 |
HIP 73895 |
5.95 |
| 2026-10-11 00:00 |
15:05:37.76 |
+52:22:50.3 |
HIP 73895 |
5.44 |