메타데이터
| 항목 |
값 |
| Designation |
C/2004 X3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-06-17T04:32:11.241600Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:45Z |
| Obs used |
241 |
| NEO |
- |
| M1 |
6.800 |
| K1 |
13.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2005-02-19.0000000 |
| e |
1.00642712 |
| q (au) |
4.402298 |
| a (au) |
-684.956072 |
| i (deg) |
81.076589 |
| Ω (om, deg) |
343.047740 |
| ω (w, deg) |
202.126117 |
| M (ma, deg) |
-0.006498 |
밝기
산란 + 전체 선형
$$
M_a = (12.305 + 3.877\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.305 |
| n |
3.877 |
| gf |
0.944 |
| gb |
-0.765 |
| k |
0.800 |
| δ90 |
9.207 |
| 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 |
23:20:31.38 |
-22:56:18.9 |
HIP 115204 |
9.63 |
| 2026-05-12 12:00 |
23:20:32.74 |
-22:56:20.3 |
HIP 115204 |
9.86 |
| 2026-05-13 00:00 |
23:20:34.08 |
-22:56:21.8 |
HIP 115204 |
10.09 |
| 2026-05-13 12:00 |
23:20:35.39 |
-22:56:23.5 |
HIP 115204 |
10.33 |
| 2026-05-14 00:00 |
23:20:36.69 |
-22:56:25.4 |
HIP 115204 |
10.57 |
| 2026-05-14 12:00 |
23:20:37.96 |
-22:56:27.5 |
HIP 115204 |
10.81 |
| 2026-05-15 00:00 |
23:20:39.20 |
-22:56:29.7 |
HIP 115204 |
11.05 |
| 2026-05-15 12:00 |
23:20:40.43 |
-22:56:32.1 |
HIP 115204 |
11.29 |
| 2026-05-16 00:00 |
23:20:41.63 |
-22:56:34.8 |
HIP 115204 |
11.54 |
| 2026-05-16 12:00 |
23:20:42.81 |
-22:56:37.6 |
HIP 115204 |
11.78 |
| 2026-05-17 00:00 |
23:20:43.97 |
-22:56:40.5 |
HIP 115204 |
12.02 |
| 2026-05-17 12:00 |
23:20:45.10 |
-22:56:43.7 |
HIP 115204 |
12.26 |
| 2026-05-18 00:00 |
23:20:46.21 |
-22:56:47.0 |
HIP 115204 |
12.49 |
| 2026-05-18 12:00 |
23:20:47.30 |
-22:56:50.5 |
HIP 115204 |
12.73 |
| 2026-05-19 00:00 |
23:20:48.36 |
-22:56:54.2 |
HIP 115204 |
12.96 |
| 2026-05-19 12:00 |
23:20:49.40 |
-22:56:58.1 |
HIP 115204 |
13.20 |
| 2026-05-20 00:00 |
23:20:50.42 |
-22:57:02.2 |
HIP 115204 |
13.43 |
| 2026-05-20 12:00 |
23:20:51.41 |
-22:57:06.4 |
HIP 115204 |
13.65 |
| 2026-05-21 00:00 |
23:20:52.38 |
-22:57:10.8 |
HIP 115204 |
13.88 |
| 2026-05-21 12:00 |
23:20:53.33 |
-22:57:15.4 |
HIP 115204 |
14.10 |
| 2026-05-22 00:00 |
23:20:54.25 |
-22:57:20.1 |
HIP 115204 |
14.32 |
| 2026-05-22 12:00 |
23:20:55.15 |
-22:57:25.0 |
HIP 115204 |
14.54 |
| 2026-05-23 00:00 |
23:20:56.02 |
-22:57:30.1 |
HIP 115204 |
14.75 |
| 2026-05-23 12:00 |
23:20:56.87 |
-22:57:35.4 |
HIP 115204 |
14.96 |
| 2026-05-24 00:00 |
23:20:57.70 |
-22:57:40.9 |
HIP 115204 |
15.17 |
| 2026-05-24 12:00 |
23:20:58.50 |
-22:57:46.5 |
HIP 115204 |
15.38 |
| 2026-05-25 00:00 |
23:20:59.28 |
-22:57:52.3 |
HIP 115204 |
15.58 |
| 2026-05-25 12:00 |
23:21:00.03 |
-22:57:58.2 |
HIP 115204 |
15.78 |
| 2026-05-26 00:00 |
23:21:00.76 |
-22:58:04.4 |
HIP 115204 |
15.98 |
| 2026-05-26 12:00 |
23:21:01.47 |
-22:58:10.7 |
HIP 115204 |
16.17 |
| 2026-05-27 00:00 |
23:21:02.15 |
-22:58:17.1 |
HIP 115204 |
16.36 |
| 2026-05-27 12:00 |
23:21:02.81 |
-22:58:23.8 |
HIP 115204 |
16.55 |
| 2026-05-28 00:00 |
23:21:03.44 |
-22:58:30.6 |
HIP 115204 |
16.73 |
| 2026-05-28 12:00 |
23:21:04.05 |
-22:58:37.6 |
HIP 115204 |
16.91 |
| 2026-05-29 00:00 |
23:21:04.63 |
-22:58:44.7 |
HIP 115204 |
17.09 |
| 2026-05-29 12:00 |
23:21:05.19 |
-22:58:52.0 |
HIP 115204 |
17.27 |
| 2026-05-30 00:00 |
23:21:05.73 |
-22:58:59.5 |
HIP 115204 |
17.44 |
| 2026-05-30 12:00 |
23:21:06.24 |
-22:59:07.1 |
HIP 115204 |
17.61 |
| 2026-05-31 00:00 |
23:21:06.73 |
-22:59:14.9 |
HIP 115204 |
17.77 |
| 2026-05-31 12:00 |
23:21:07.19 |
-22:59:22.8 |
HIP 115204 |
17.93 |
| 2026-06-01 00:00 |
23:21:07.62 |
-22:59:30.9 |
HIP 115204 |
18.09 |
| 2026-06-01 12:00 |
23:21:08.03 |
-22:59:39.2 |
HIP 115204 |
18.25 |
| 2026-06-02 00:00 |
23:21:08.42 |
-22:59:47.7 |
HIP 115204 |
18.40 |