C/2016 X1 (Lemmon)
메타데이터
| 항목 |
값 |
| Designation |
C/2016 X1 (Lemmon) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2019-04-29T21:10:40.776960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:28Z |
| Obs used |
289 |
| NEO |
- |
| M1 |
6.600 |
| K1 |
9.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2018-09-28.0000000 |
| e |
0.99625285 |
| q (au) |
7.564181 |
| a (au) |
2018.648757 |
| i (deg) |
26.455050 |
| Ω (om, deg) |
256.425245 |
| ω (w, deg) |
224.569464 |
| M (ma, deg) |
359.997676 |
밝기
산란 + 전체 선형
$$
M_a = (0.331 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
0.331 |
| n |
6.000 |
| gf |
0.995 |
| gb |
-0.734 |
| 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) |
| 2026-02-03 00:00 |
14:08:13.04 |
-31:38:39.8 |
HIP 69000 |
16.16 |
| 2026-02-03 12:00 |
14:08:13.70 |
-31:39:08.9 |
HIP 69000 |
15.82 |
| 2026-02-04 00:00 |
14:08:14.29 |
-31:39:37.7 |
HIP 69000 |
15.48 |
| 2026-02-04 12:00 |
14:08:14.81 |
-31:40:06.1 |
HIP 69000 |
15.15 |
| 2026-02-05 00:00 |
14:08:15.26 |
-31:40:34.1 |
HIP 69000 |
14.83 |
| 2026-02-05 12:00 |
14:08:15.63 |
-31:41:01.9 |
HIP 69000 |
14.51 |
| 2026-02-06 00:00 |
14:08:15.94 |
-31:41:29.2 |
HIP 69000 |
14.19 |
| 2026-02-06 12:00 |
14:08:16.17 |
-31:41:56.2 |
HIP 69000 |
13.87 |
| 2026-02-07 00:00 |
14:08:16.33 |
-31:42:22.9 |
HIP 69000 |
13.56 |
| 2026-02-07 12:00 |
14:08:16.43 |
-31:42:49.1 |
HIP 69000 |
13.24 |
| 2026-02-08 00:00 |
14:08:16.45 |
-31:43:15.1 |
HIP 69000 |
12.93 |
| 2026-02-08 12:00 |
14:08:16.40 |
-31:43:40.6 |
HIP 69000 |
12.62 |
| 2026-02-09 00:00 |
14:08:16.28 |
-31:44:05.8 |
HIP 69000 |
12.31 |
| 2026-02-09 12:00 |
14:08:16.09 |
-31:44:30.6 |
HIP 69000 |
12.00 |
| 2026-02-10 00:00 |
14:08:15.83 |
-31:44:55.1 |
HIP 69000 |
11.69 |
| 2026-02-10 12:00 |
14:08:15.49 |
-31:45:19.1 |
HIP 69000 |
11.38 |
| 2026-02-11 00:00 |
14:08:15.09 |
-31:45:42.8 |
HIP 69000 |
11.07 |
| 2026-02-11 12:00 |
14:08:14.62 |
-31:46:06.1 |
HIP 69000 |
10.75 |
| 2026-02-12 00:00 |
14:08:14.07 |
-31:46:29.0 |
HIP 69000 |
10.43 |
| 2026-02-12 12:00 |
14:08:13.46 |
-31:46:51.6 |
HIP 69000 |
10.11 |
| 2026-02-13 00:00 |
14:08:12.78 |
-31:47:13.7 |
HIP 69000 |
9.78 |
| 2026-02-13 12:00 |
14:08:12.02 |
-31:47:35.5 |
HIP 69000 |
9.45 |
| 2026-02-14 00:00 |
14:08:11.20 |
-31:47:56.8 |
HIP 69000 |
9.12 |
| 2026-02-14 12:00 |
14:08:10.30 |
-31:48:17.8 |
HIP 69000 |
8.78 |
| 2026-02-15 00:00 |
14:08:09.34 |
-31:48:38.4 |
HIP 69000 |
8.44 |
| 2026-02-15 12:00 |
14:08:08.31 |
-31:48:58.5 |
HIP 69000 |
8.09 |
| 2026-02-16 00:00 |
14:08:07.21 |
-31:49:18.3 |
HIP 69000 |
7.74 |
| 2026-02-16 12:00 |
14:08:06.04 |
-31:49:37.6 |
HIP 69000 |
7.38 |
| 2026-02-17 00:00 |
14:08:04.80 |
-31:49:56.6 |
HIP 69000 |
7.02 |
| 2026-02-17 12:00 |
14:08:03.49 |
-31:50:15.1 |
HIP 69000 |
6.65 |
| 2026-02-18 00:00 |
14:08:02.11 |
-31:50:33.3 |
HIP 69000 |
6.27 |
| 2026-02-18 12:00 |
14:08:00.66 |
-31:50:51.0 |
HIP 69000 |
5.89 |
| 2026-02-19 00:00 |
14:07:59.15 |
-31:51:08.3 |
HIP 69000 |
5.50 |
| 2026-02-19 12:00 |
14:07:57.57 |
-31:51:25.2 |
HIP 69000 |
5.11 |
| 2026-02-20 00:00 |
14:07:55.92 |
-31:51:41.6 |
HIP 69000 |
4.71 |
| 2026-02-20 12:00 |
14:07:54.20 |
-31:51:57.7 |
HIP 69000 |
4.31 |
| 2026-02-21 00:00 |
14:07:52.42 |
-31:52:13.3 |
HIP 69000 |
3.90 |
| 2026-02-21 12:00 |
14:07:50.57 |
-31:52:28.5 |
HIP 69000 |
3.50 |
| 2026-02-22 00:00 |
14:07:48.65 |
-31:52:43.2 |
HIP 69000 |
3.10 |
| 2026-02-22 12:00 |
14:07:46.67 |
-31:52:57.6 |
HIP 69000 |
2.70 |
| 2026-02-23 00:00 |
14:07:44.62 |
-31:53:11.5 |
HIP 69000 |
2.33 |
| 2026-02-23 12:00 |
14:07:42.51 |
-31:53:25.0 |
HIP 69000 |
1.99 |
| 2026-02-24 00:00 |
14:07:40.33 |
-31:53:38.0 |
HIP 69000 |
1.72 |