메타데이터
| 항목 |
값 |
| Designation |
C/1999 N2 (Lynn) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1999-07-23T01:12:49.584960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:01Z |
| Obs used |
203 |
| NEO |
- |
| M1 |
10.200 |
| K1 |
7.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1999-08-07.0000000 |
| e |
0.99743788 |
| q (au) |
0.761284 |
| a (au) |
297.130861 |
| i (deg) |
111.655898 |
| Ω (om, deg) |
254.675893 |
| ω (w, deg) |
357.834196 |
| M (ma, deg) |
0.002877 |
밝기
산란 + 전체 선형
$$
M_a = (9.119 + 3.568\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.119 |
| n |
3.568 |
| gf |
0.800 |
| gb |
-0.711 |
| k |
0.800 |
| δ90 |
1.362 |
| 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 |
05:18:03.01 |
+37:33:09.6 |
HIP 24724 |
6.02 |
| 2026-07-29 12:00 |
05:18:05.05 |
+37:33:16.8 |
HIP 24724 |
5.82 |
| 2026-07-30 00:00 |
05:18:07.06 |
+37:33:24.1 |
HIP 24724 |
5.64 |
| 2026-07-30 12:00 |
05:18:09.06 |
+37:33:31.3 |
HIP 24724 |
5.49 |
| 2026-07-31 00:00 |
05:18:11.04 |
+37:33:38.7 |
HIP 24724 |
5.37 |
| 2026-07-31 12:00 |
05:18:13.00 |
+37:33:46.0 |
HIP 24724 |
5.27 |
| 2026-08-01 00:00 |
05:18:14.95 |
+37:33:53.4 |
HIP 24724 |
5.21 |
| 2026-08-01 12:00 |
05:18:16.88 |
+37:34:00.8 |
HIP 24724 |
5.17 |
| 2026-08-02 00:00 |
05:18:18.78 |
+37:34:08.3 |
HIP 24724 |
5.16 |
| 2026-08-02 12:00 |
05:18:20.67 |
+37:34:15.8 |
HIP 24724 |
5.18 |
| 2026-08-03 00:00 |
05:18:22.55 |
+37:34:23.3 |
HIP 24724 |
5.23 |
| 2026-08-03 12:00 |
05:18:24.40 |
+37:34:30.8 |
HIP 24724 |
5.30 |
| 2026-08-04 00:00 |
05:18:26.23 |
+37:34:38.4 |
HIP 24724 |
5.40 |
| 2026-08-04 12:00 |
05:18:28.05 |
+37:34:46.0 |
HIP 24724 |
5.52 |
| 2026-08-05 00:00 |
05:18:29.84 |
+37:34:53.7 |
HIP 24724 |
5.66 |
| 2026-08-05 12:00 |
05:18:31.62 |
+37:35:01.3 |
HIP 24724 |
5.82 |
| 2026-08-06 00:00 |
05:18:33.38 |
+37:35:09.0 |
HIP 24724 |
6.00 |
| 2026-08-06 12:00 |
05:18:35.12 |
+37:35:16.8 |
HIP 24724 |
6.19 |
| 2026-08-07 00:00 |
05:18:36.83 |
+37:35:24.5 |
HIP 24724 |
6.39 |
| 2026-08-07 12:00 |
05:18:38.53 |
+37:35:32.3 |
HIP 24724 |
6.60 |
| 2026-08-08 00:00 |
05:18:40.21 |
+37:35:40.1 |
HIP 24724 |
6.82 |
| 2026-08-08 12:00 |
05:18:41.87 |
+37:35:48.0 |
HIP 24724 |
7.05 |
| 2026-08-09 00:00 |
05:18:43.51 |
+37:35:55.9 |
HIP 24724 |
7.28 |
| 2026-08-09 12:00 |
05:18:45.12 |
+37:36:03.8 |
HIP 24724 |
7.52 |
| 2026-08-10 00:00 |
05:18:46.72 |
+37:36:11.7 |
HIP 24724 |
7.76 |
| 2026-08-10 12:00 |
05:18:48.30 |
+37:36:19.6 |
HIP 24724 |
8.01 |
| 2026-08-11 00:00 |
05:18:49.85 |
+37:36:27.6 |
HIP 24724 |
8.26 |
| 2026-08-11 12:00 |
05:18:51.39 |
+37:36:35.6 |
HIP 24724 |
8.51 |
| 2026-08-12 00:00 |
05:18:52.90 |
+37:36:43.6 |
HIP 24724 |
8.76 |
| 2026-08-12 12:00 |
05:18:54.39 |
+37:36:51.6 |
HIP 24724 |
9.01 |
| 2026-08-13 00:00 |
05:18:55.87 |
+37:36:59.7 |
HIP 24724 |
9.27 |
| 2026-08-13 12:00 |
05:18:57.32 |
+37:37:07.8 |
HIP 24724 |
9.52 |
| 2026-08-14 00:00 |
05:18:58.74 |
+37:37:15.9 |
HIP 24724 |
9.77 |
| 2026-08-14 12:00 |
05:19:00.15 |
+37:37:24.0 |
HIP 24724 |
10.02 |
| 2026-08-15 00:00 |
05:19:01.53 |
+37:37:32.2 |
HIP 24724 |
10.27 |
| 2026-08-15 12:00 |
05:19:02.90 |
+37:37:40.3 |
HIP 24724 |
10.52 |
| 2026-08-16 00:00 |
05:19:04.24 |
+37:37:48.5 |
HIP 24724 |
10.77 |
| 2026-08-16 12:00 |
05:19:05.55 |
+37:37:56.7 |
HIP 24724 |
11.01 |
| 2026-08-17 00:00 |
05:19:06.85 |
+37:38:04.9 |
HIP 24724 |
11.26 |
| 2026-08-17 12:00 |
05:19:08.12 |
+37:38:13.2 |
HIP 24724 |
11.50 |
| 2026-08-18 00:00 |
05:19:09.37 |
+37:38:21.4 |
HIP 24724 |
11.74 |
| 2026-08-18 12:00 |
05:19:10.60 |
+37:38:29.7 |
HIP 24724 |
11.97 |
| 2026-08-19 00:00 |
05:19:11.81 |
+37:38:38.0 |
HIP 24724 |
12.21 |