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 |
-0.500 |
| 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) |
| 2026-03-26 00:00 |
22:33:07.68 |
-08:51:20.5 |
HIP 111332 |
12.91 |
| 2026-03-26 12:00 |
22:33:09.74 |
-08:51:06.8 |
HIP 111332 |
13.01 |
| 2026-03-27 00:00 |
22:33:11.80 |
-08:50:53.0 |
HIP 111332 |
13.13 |
| 2026-03-27 12:00 |
22:33:13.84 |
-08:50:39.4 |
HIP 111332 |
13.28 |
| 2026-03-28 00:00 |
22:33:15.88 |
-08:50:25.7 |
HIP 111332 |
13.44 |
| 2026-03-28 12:00 |
22:33:17.90 |
-08:50:12.2 |
HIP 111332 |
13.63 |
| 2026-03-29 00:00 |
22:33:19.91 |
-08:49:58.7 |
HIP 111332 |
13.83 |
| 2026-03-29 12:00 |
22:33:21.91 |
-08:49:45.3 |
HIP 111332 |
14.05 |
| 2026-03-30 00:00 |
22:33:23.90 |
-08:49:31.9 |
HIP 111332 |
14.29 |
| 2026-03-30 12:00 |
22:33:25.89 |
-08:49:18.6 |
HIP 111332 |
14.54 |
| 2026-03-31 00:00 |
22:33:27.85 |
-08:49:05.3 |
HIP 111332 |
14.80 |
| 2026-03-31 12:00 |
22:33:29.81 |
-08:48:52.1 |
HIP 111332 |
15.08 |
| 2026-04-01 00:00 |
22:33:31.76 |
-08:48:39.0 |
HIP 111332 |
15.37 |
| 2026-04-01 12:00 |
22:33:33.69 |
-08:48:26.0 |
HIP 111332 |
15.67 |
| 2026-04-02 00:00 |
22:33:35.62 |
-08:48:13.0 |
HIP 111332 |
15.98 |
| 2026-04-02 12:00 |
22:33:37.53 |
-08:48:00.1 |
HIP 111332 |
16.30 |
| 2026-04-03 00:00 |
22:33:39.43 |
-08:47:47.2 |
HIP 111332 |
16.63 |
| 2026-04-03 12:00 |
22:33:41.32 |
-08:47:34.4 |
HIP 111332 |
16.96 |
| 2026-04-04 00:00 |
22:33:43.19 |
-08:47:21.7 |
HIP 111332 |
17.30 |
| 2026-04-04 12:00 |
22:33:45.06 |
-08:47:09.1 |
HIP 111451 |
17.56 |
| 2026-04-05 00:00 |
22:33:46.91 |
-08:46:56.5 |
HIP 111451 |
17.07 |
| 2026-04-05 12:00 |
22:33:48.75 |
-08:46:44.0 |
HIP 111451 |
16.58 |
| 2026-04-06 00:00 |
22:33:50.57 |
-08:46:31.6 |
HIP 111451 |
16.10 |
| 2026-04-06 12:00 |
22:33:52.38 |
-08:46:19.2 |
HIP 111451 |
15.62 |
| 2026-04-07 00:00 |
22:33:54.18 |
-08:46:07.0 |
HIP 111451 |
15.14 |
| 2026-04-07 12:00 |
22:33:55.97 |
-08:45:54.7 |
HIP 111451 |
14.67 |
| 2026-04-08 00:00 |
22:33:57.74 |
-08:45:42.6 |
HIP 111451 |
14.21 |
| 2026-04-08 12:00 |
22:33:59.50 |
-08:45:30.6 |
HIP 111451 |
13.75 |
| 2026-04-09 00:00 |
22:34:01.25 |
-08:45:18.6 |
HIP 111451 |
13.29 |
| 2026-04-09 12:00 |
22:34:02.99 |
-08:45:06.7 |
HIP 111451 |
12.83 |
| 2026-04-10 00:00 |
22:34:04.71 |
-08:44:54.9 |
HIP 111451 |
12.39 |
| 2026-04-10 12:00 |
22:34:06.41 |
-08:44:43.1 |
HIP 111451 |
11.94 |
| 2026-04-11 00:00 |
22:34:08.10 |
-08:44:31.5 |
HIP 111451 |
11.51 |
| 2026-04-11 12:00 |
22:34:09.78 |
-08:44:19.9 |
HIP 111451 |
11.07 |
| 2026-04-12 00:00 |
22:34:11.44 |
-08:44:08.4 |
HIP 111451 |
10.65 |
| 2026-04-12 12:00 |
22:34:13.09 |
-08:43:57.0 |
HIP 111451 |
10.22 |
| 2026-04-13 00:00 |
22:34:14.73 |
-08:43:45.6 |
HIP 111451 |
9.81 |
| 2026-04-13 12:00 |
22:34:16.35 |
-08:43:34.4 |
HIP 111451 |
9.40 |
| 2026-04-14 00:00 |
22:34:17.95 |
-08:43:23.2 |
HIP 111451 |
9.00 |
| 2026-04-14 12:00 |
22:34:19.54 |
-08:43:12.2 |
HIP 111451 |
8.60 |
| 2026-04-15 00:00 |
22:34:21.12 |
-08:43:01.2 |
HIP 111451 |
8.21 |
| 2026-04-15 12:00 |
22:34:22.68 |
-08:42:50.3 |
HIP 111451 |
7.83 |
| 2026-04-16 00:00 |
22:34:24.23 |
-08:42:39.4 |
HIP 111451 |
7.46 |