메타데이터
| 항목 |
값 |
| Designation |
C/2001 X1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-01-08T02:12:26.190720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:11Z |
| Obs used |
203 |
| NEO |
- |
| M1 |
14.000 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2002-01-06.0000000 |
| e |
0.99704180 |
| q (au) |
1.697938 |
| a (au) |
573.976425 |
| i (deg) |
115.626976 |
| Ω (om, deg) |
336.070632 |
| ω (w, deg) |
202.201070 |
| M (ma, deg) |
359.999850 |
밝기
산란 + 전체 선형
$$
M_a = (11.612 + 4.130\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.612 |
| n |
4.130 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
22:32:59.81 |
-08:44:54.4 |
HIP 111332 |
19.63 |
| 2026-07-29 12:00 |
22:32:57.60 |
-08:45:05.7 |
HIP 111332 |
19.61 |
| 2026-07-30 00:00 |
22:32:55.39 |
-08:45:17.1 |
HIP 111332 |
19.60 |
| 2026-07-30 12:00 |
22:32:53.16 |
-08:45:28.5 |
HIP 111332 |
19.61 |
| 2026-07-31 00:00 |
22:32:50.93 |
-08:45:40.0 |
HIP 111332 |
19.63 |
| 2026-07-31 12:00 |
22:32:48.68 |
-08:45:51.5 |
HIP 111332 |
19.68 |
| 2026-08-01 00:00 |
22:32:46.42 |
-08:46:03.1 |
HIP 111332 |
19.74 |
| 2026-08-01 12:00 |
22:32:44.15 |
-08:46:14.8 |
HIP 111332 |
19.82 |
| 2026-08-02 00:00 |
22:32:41.88 |
-08:46:26.5 |
HIP 111332 |
19.91 |
| 2026-08-02 12:00 |
22:32:39.59 |
-08:46:38.3 |
HIP 111332 |
20.03 |
| 2026-08-03 00:00 |
22:32:37.29 |
-08:46:50.2 |
HIP 111332 |
20.16 |
| 2026-08-03 12:00 |
22:32:34.99 |
-08:47:02.1 |
HIP 111332 |
20.31 |
| 2026-08-04 00:00 |
22:32:32.67 |
-08:47:14.0 |
HIP 111332 |
20.47 |
| 2026-08-04 12:00 |
22:32:30.35 |
-08:47:26.0 |
HIP 111332 |
20.66 |
| 2026-08-05 00:00 |
22:32:28.02 |
-08:47:38.1 |
HIP 111332 |
20.86 |
| 2026-08-05 12:00 |
22:32:25.67 |
-08:47:50.2 |
HIP 111332 |
21.07 |
| 2026-08-06 00:00 |
22:32:23.32 |
-08:48:02.3 |
HIP 111332 |
21.31 |
| 2026-08-06 12:00 |
22:32:20.96 |
-08:48:14.6 |
HIP 111332 |
21.55 |
| 2026-08-07 00:00 |
22:32:18.60 |
-08:48:26.8 |
HIP 111332 |
21.82 |
| 2026-08-07 12:00 |
22:32:16.22 |
-08:48:39.1 |
HIP 111332 |
22.10 |
| 2026-08-08 00:00 |
22:32:13.84 |
-08:48:51.5 |
HIP 111332 |
22.39 |
| 2026-08-08 12:00 |
22:32:11.44 |
-08:49:03.9 |
HIP 111332 |
22.70 |
| 2026-08-09 00:00 |
22:32:09.05 |
-08:49:16.4 |
HIP 111332 |
23.02 |
| 2026-08-09 12:00 |
22:32:06.64 |
-08:49:28.9 |
HIP 111332 |
23.36 |
| 2026-08-10 00:00 |
22:32:04.22 |
-08:49:41.4 |
HIP 111116 |
22.94 |
| 2026-08-10 12:00 |
22:32:01.80 |
-08:49:54.0 |
HIP 111116 |
22.44 |
| 2026-08-11 00:00 |
22:31:59.37 |
-08:50:06.6 |
HIP 111116 |
21.95 |
| 2026-08-11 12:00 |
22:31:56.94 |
-08:50:19.3 |
HIP 111116 |
21.47 |
| 2026-08-12 00:00 |
22:31:54.50 |
-08:50:32.0 |
HIP 111116 |
21.00 |
| 2026-08-12 12:00 |
22:31:52.05 |
-08:50:44.8 |
HIP 111116 |
20.53 |
| 2026-08-13 00:00 |
22:31:49.60 |
-08:50:57.6 |
HIP 111116 |
20.07 |
| 2026-08-13 12:00 |
22:31:47.14 |
-08:51:10.4 |
HIP 111116 |
19.62 |
| 2026-08-14 00:00 |
22:31:44.67 |
-08:51:23.2 |
HIP 111116 |
19.18 |
| 2026-08-14 12:00 |
22:31:42.20 |
-08:51:36.1 |
HIP 111116 |
18.75 |
| 2026-08-15 00:00 |
22:31:39.72 |
-08:51:49.1 |
HIP 111116 |
18.34 |
| 2026-08-15 12:00 |
22:31:37.24 |
-08:52:02.0 |
HIP 111116 |
17.93 |
| 2026-08-16 00:00 |
22:31:34.75 |
-08:52:15.0 |
HIP 111116 |
17.55 |
| 2026-08-16 12:00 |
22:31:32.26 |
-08:52:28.0 |
HIP 111116 |
17.17 |
| 2026-08-17 00:00 |
22:31:29.76 |
-08:52:41.1 |
HIP 111116 |
16.81 |
| 2026-08-17 12:00 |
22:31:27.26 |
-08:52:54.1 |
HIP 111116 |
16.47 |
| 2026-08-18 00:00 |
22:31:24.76 |
-08:53:07.2 |
HIP 111116 |
16.15 |
| 2026-08-18 12:00 |
22:31:22.25 |
-08:53:20.3 |
HIP 111116 |
15.85 |
| 2026-08-19 00:00 |
22:31:19.73 |
-08:53:33.5 |
HIP 111116 |
15.57 |