메타데이터
| 항목 |
값 |
| Designation |
C/1999 L2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1999-08-04T21:14:58.248960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:00Z |
| Obs used |
94 |
| NEO |
- |
| M1 |
13.000 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1999-06-22.0000000 |
| e |
0.99514569 |
| q (au) |
1.904764 |
| a (au) |
392.386280 |
| i (deg) |
43.941726 |
| Ω (om, deg) |
94.289819 |
| ω (w, deg) |
178.715840 |
| M (ma, deg) |
359.994435 |
밝기
산란 + 전체 선형
$$
M_a = (11.743 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.743 |
| n |
6.000 |
| 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) |
| 2026-05-12 00:00 |
05:06:52.57 |
+07:03:36.1 |
HIP 23961 |
33.20 |
| 2026-05-12 12:00 |
05:06:54.79 |
+07:03:44.6 |
HIP 23961 |
32.71 |
| 2026-05-13 00:00 |
05:06:57.02 |
+07:03:52.9 |
HIP 23961 |
32.22 |
| 2026-05-13 12:00 |
05:06:59.26 |
+07:04:01.2 |
HIP 23961 |
31.73 |
| 2026-05-14 00:00 |
05:07:01.51 |
+07:04:09.4 |
HIP 23961 |
31.24 |
| 2026-05-14 12:00 |
05:07:03.77 |
+07:04:17.6 |
HIP 23961 |
30.76 |
| 2026-05-15 00:00 |
05:07:06.03 |
+07:04:25.7 |
HIP 23961 |
30.27 |
| 2026-05-15 12:00 |
05:07:08.31 |
+07:04:33.7 |
HIP 23961 |
29.79 |
| 2026-05-16 00:00 |
05:07:10.59 |
+07:04:41.6 |
HIP 23961 |
29.30 |
| 2026-05-16 12:00 |
05:07:12.88 |
+07:04:49.5 |
HIP 23961 |
28.82 |
| 2026-05-17 00:00 |
05:07:15.18 |
+07:04:57.3 |
HIP 23961 |
28.34 |
| 2026-05-17 12:00 |
05:07:17.48 |
+07:05:05.1 |
HIP 23961 |
27.86 |
| 2026-05-18 00:00 |
05:07:19.79 |
+07:05:12.7 |
HIP 23961 |
27.38 |
| 2026-05-18 12:00 |
05:07:22.11 |
+07:05:20.3 |
HIP 23961 |
26.91 |
| 2026-05-19 00:00 |
05:07:24.43 |
+07:05:27.9 |
HIP 23961 |
26.44 |
| 2026-05-19 12:00 |
05:07:26.77 |
+07:05:35.3 |
HIP 23961 |
25.97 |
| 2026-05-20 00:00 |
05:07:29.10 |
+07:05:42.7 |
HIP 23961 |
25.50 |
| 2026-05-20 12:00 |
05:07:31.45 |
+07:05:50.0 |
HIP 23961 |
25.04 |
| 2026-05-21 00:00 |
05:07:33.80 |
+07:05:57.2 |
HIP 23961 |
24.58 |
| 2026-05-21 12:00 |
05:07:36.16 |
+07:06:04.4 |
HIP 23961 |
24.12 |
| 2026-05-22 00:00 |
05:07:38.52 |
+07:06:11.5 |
HIP 23961 |
23.67 |
| 2026-05-22 12:00 |
05:07:40.89 |
+07:06:18.5 |
HIP 23961 |
23.23 |
| 2026-05-23 00:00 |
05:07:43.26 |
+07:06:25.5 |
HIP 23961 |
22.79 |
| 2026-05-23 12:00 |
05:07:45.64 |
+07:06:32.3 |
HIP 23961 |
22.35 |
| 2026-05-24 00:00 |
05:07:48.03 |
+07:06:39.1 |
HIP 23961 |
21.92 |
| 2026-05-24 12:00 |
05:07:50.42 |
+07:06:45.8 |
HIP 23961 |
21.50 |
| 2026-05-25 00:00 |
05:07:52.81 |
+07:06:52.5 |
HIP 23961 |
21.09 |
| 2026-05-25 12:00 |
05:07:55.21 |
+07:06:59.0 |
HIP 23961 |
20.68 |
| 2026-05-26 00:00 |
05:07:57.61 |
+07:07:05.5 |
HIP 23961 |
20.28 |
| 2026-05-26 12:00 |
05:08:00.02 |
+07:07:12.0 |
HIP 23961 |
19.89 |
| 2026-05-27 00:00 |
05:08:02.43 |
+07:07:18.3 |
HIP 23961 |
19.51 |
| 2026-05-27 12:00 |
05:08:04.85 |
+07:07:24.6 |
HIP 23961 |
19.14 |
| 2026-05-28 00:00 |
05:08:07.27 |
+07:07:30.7 |
HIP 23961 |
18.78 |
| 2026-05-28 12:00 |
05:08:09.69 |
+07:07:36.8 |
HIP 23961 |
18.43 |
| 2026-05-29 00:00 |
05:08:12.12 |
+07:07:42.9 |
HIP 23961 |
18.10 |
| 2026-05-29 12:00 |
05:08:14.55 |
+07:07:48.8 |
HIP 23961 |
17.77 |
| 2026-05-30 00:00 |
05:08:16.98 |
+07:07:54.7 |
HIP 23961 |
17.46 |
| 2026-05-30 12:00 |
05:08:19.42 |
+07:08:00.5 |
HIP 23961 |
17.17 |
| 2026-05-31 00:00 |
05:08:21.86 |
+07:08:06.2 |
HIP 23961 |
16.89 |
| 2026-05-31 12:00 |
05:08:24.31 |
+07:08:11.8 |
HIP 23961 |
16.63 |
| 2026-06-01 00:00 |
05:08:26.75 |
+07:08:17.4 |
HIP 23961 |
16.38 |
| 2026-06-01 12:00 |
05:08:29.20 |
+07:08:22.9 |
HIP 23961 |
16.16 |
| 2026-06-02 00:00 |
05:08:31.65 |
+07:08:28.3 |
HIP 23961 |
15.95 |