메타데이터
| 항목 |
값 |
| Designation |
C/2006 XA1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-07-21T21:31:41.396160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:03Z |
| Obs used |
486 |
| NEO |
- |
| M1 |
7.400 |
| K1 |
17.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2007-03-16.0000000 |
| e |
0.99283774 |
| q (au) |
1.804376 |
| a (au) |
251.928275 |
| i (deg) |
30.629404 |
| Ω (om, deg) |
318.663524 |
| ω (w, deg) |
187.418049 |
| M (ma, deg) |
359.968475 |
밝기
산란 + 전체 선형
$$
M_a = (9.115 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.115 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.883 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
20:40:40.36 |
-27:12:59.5 |
HIP 102152 |
16.49 |
| 2026-05-12 12:00 |
20:40:39.71 |
-27:13:07.6 |
HIP 102152 |
16.63 |
| 2026-05-13 00:00 |
20:40:39.04 |
-27:13:15.8 |
HIP 102152 |
16.78 |
| 2026-05-13 12:00 |
20:40:38.34 |
-27:13:24.1 |
HIP 102152 |
16.94 |
| 2026-05-14 00:00 |
20:40:37.61 |
-27:13:32.5 |
HIP 102152 |
17.11 |
| 2026-05-14 12:00 |
20:40:36.85 |
-27:13:41.0 |
HIP 102152 |
17.28 |
| 2026-05-15 00:00 |
20:40:36.06 |
-27:13:49.5 |
HIP 102152 |
17.46 |
| 2026-05-15 12:00 |
20:40:35.25 |
-27:13:58.2 |
HIP 102152 |
17.65 |
| 2026-05-16 00:00 |
20:40:34.40 |
-27:14:06.9 |
HIP 102152 |
17.85 |
| 2026-05-16 12:00 |
20:40:33.53 |
-27:14:15.7 |
HIP 102152 |
18.05 |
| 2026-05-17 00:00 |
20:40:32.63 |
-27:14:24.6 |
HIP 102152 |
18.26 |
| 2026-05-17 12:00 |
20:40:31.70 |
-27:14:33.6 |
HIP 102152 |
18.48 |
| 2026-05-18 00:00 |
20:40:30.74 |
-27:14:42.7 |
HIP 102152 |
18.71 |
| 2026-05-18 12:00 |
20:40:29.75 |
-27:14:51.8 |
HIP 102152 |
18.94 |
| 2026-05-19 00:00 |
20:40:28.74 |
-27:15:01.0 |
HIP 102152 |
19.18 |
| 2026-05-19 12:00 |
20:40:27.70 |
-27:15:10.3 |
HIP 102152 |
19.43 |
| 2026-05-20 00:00 |
20:40:26.63 |
-27:15:19.7 |
HIP 102152 |
19.68 |
| 2026-05-20 12:00 |
20:40:25.53 |
-27:15:29.1 |
HIP 102030 |
19.83 |
| 2026-05-21 00:00 |
20:40:24.40 |
-27:15:38.6 |
HIP 102030 |
19.70 |
| 2026-05-21 12:00 |
20:40:23.25 |
-27:15:48.2 |
HIP 102030 |
19.58 |
| 2026-05-22 00:00 |
20:40:22.07 |
-27:15:57.9 |
HIP 102030 |
19.46 |
| 2026-05-22 12:00 |
20:40:20.86 |
-27:16:07.6 |
HIP 102030 |
19.34 |
| 2026-05-23 00:00 |
20:40:19.62 |
-27:16:17.5 |
HIP 102030 |
19.23 |
| 2026-05-23 12:00 |
20:40:18.36 |
-27:16:27.3 |
HIP 102030 |
19.12 |
| 2026-05-24 00:00 |
20:40:17.07 |
-27:16:37.3 |
HIP 102030 |
19.01 |
| 2026-05-24 12:00 |
20:40:15.76 |
-27:16:47.3 |
HIP 102030 |
18.92 |
| 2026-05-25 00:00 |
20:40:14.41 |
-27:16:57.4 |
HIP 102030 |
18.82 |
| 2026-05-25 12:00 |
20:40:13.04 |
-27:17:07.5 |
HIP 102030 |
18.74 |
| 2026-05-26 00:00 |
20:40:11.65 |
-27:17:17.7 |
HIP 102030 |
18.66 |
| 2026-05-26 12:00 |
20:40:10.22 |
-27:17:28.0 |
HIP 102030 |
18.59 |
| 2026-05-27 00:00 |
20:40:08.77 |
-27:17:38.4 |
HIP 102030 |
18.52 |
| 2026-05-27 12:00 |
20:40:07.30 |
-27:17:48.8 |
HIP 102030 |
18.46 |
| 2026-05-28 00:00 |
20:40:05.80 |
-27:17:59.2 |
HIP 102030 |
18.42 |
| 2026-05-28 12:00 |
20:40:04.27 |
-27:18:09.7 |
HIP 102030 |
18.38 |
| 2026-05-29 00:00 |
20:40:02.71 |
-27:18:20.3 |
HIP 102030 |
18.35 |
| 2026-05-29 12:00 |
20:40:01.13 |
-27:18:31.0 |
HIP 102030 |
18.33 |
| 2026-05-30 00:00 |
20:39:59.53 |
-27:18:41.7 |
HIP 102030 |
18.32 |
| 2026-05-30 12:00 |
20:39:57.90 |
-27:18:52.4 |
HIP 102030 |
18.32 |
| 2026-05-31 00:00 |
20:39:56.24 |
-27:19:03.3 |
HIP 102030 |
18.33 |
| 2026-05-31 12:00 |
20:39:54.56 |
-27:19:14.1 |
HIP 102030 |
18.35 |
| 2026-06-01 00:00 |
20:39:52.85 |
-27:19:25.0 |
HIP 102030 |
18.38 |
| 2026-06-01 12:00 |
20:39:51.12 |
-27:19:36.0 |
HIP 102030 |
18.43 |
| 2026-06-02 00:00 |
20:39:49.37 |
-27:19:47.1 |
HIP 102030 |
18.48 |