메타데이터
| 항목 |
값 |
| Designation |
279P/La Sagra |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-10-09T20:52:39.947520Z |
| Orbit solution date (soln_date, UTC) |
2024-01-04T23:43:56Z |
| Obs used |
290 |
| NEO |
- |
| M1 |
16.000 |
| K1 |
8.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-10-26.0000000 |
| e |
0.39785019 |
| q (au) |
2.152931 |
| a (au) |
3.575408 |
| i (deg) |
5.051399 |
| Ω (om, deg) |
346.279437 |
| ω (w, deg) |
6.015546 |
| M (ma, deg) |
162.132940 |
밝기
산란 + 전체 선형
$$
M_a = (18.300 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
18.300 |
| n |
2.000 |
| gf |
0.969 |
| gb |
-0.500 |
| k |
0.800 |
| δ90 |
1.307 |
| 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) |
| 2026-06-01 00:00 |
10:22:41.97 |
+10:11:11.8 |
HIP 50812 |
23.94 |
| 2026-06-01 12:00 |
10:22:51.79 |
+10:10:03.3 |
HIP 50812 |
23.35 |
| 2026-06-02 00:00 |
10:23:01.76 |
+10:08:54.1 |
HIP 50812 |
23.07 |
| 2026-06-02 12:00 |
10:23:11.88 |
+10:07:43.9 |
HIP 50812 |
23.10 |
| 2026-06-03 00:00 |
10:23:22.15 |
+10:06:32.9 |
HIP 50812 |
23.47 |
| 2026-06-03 12:00 |
10:23:32.57 |
+10:05:21.1 |
HIP 50999 |
22.93 |
| 2026-06-04 00:00 |
10:23:43.13 |
+10:04:08.4 |
HIP 50999 |
20.10 |
| 2026-06-04 12:00 |
10:23:53.85 |
+10:02:54.9 |
HIP 50999 |
17.25 |
| 2026-06-05 00:00 |
10:24:04.70 |
+10:01:40.6 |
HIP 50999 |
14.37 |
| 2026-06-05 12:00 |
10:24:15.71 |
+10:00:25.5 |
HIP 50999 |
11.50 |
| 2026-06-06 00:00 |
10:24:26.85 |
+09:59:09.5 |
HIP 50999 |
8.66 |
| 2026-06-06 12:00 |
10:24:38.14 |
+09:57:52.7 |
HIP 50999 |
5.97 |
| 2026-06-07 00:00 |
10:24:49.57 |
+09:56:35.1 |
HIP 50999 |
3.86 |
| 2026-06-07 12:00 |
10:25:01.15 |
+09:55:16.7 |
HIP 50999 |
3.67 |
| 2026-06-08 00:00 |
10:25:12.86 |
+09:53:57.4 |
HIP 50999 |
5.65 |
| 2026-06-08 12:00 |
10:25:24.71 |
+09:52:37.4 |
HIP 50999 |
8.44 |
| 2026-06-09 00:00 |
10:25:36.70 |
+09:51:16.6 |
HIP 50999 |
11.48 |
| 2026-06-09 12:00 |
10:25:48.83 |
+09:49:54.9 |
HIP 50999 |
14.64 |
| 2026-06-10 00:00 |
10:26:01.10 |
+09:48:32.5 |
HIP 51004 |
17.60 |
| 2026-06-10 12:00 |
10:26:13.50 |
+09:47:09.3 |
HIP 51004 |
19.10 |
| 2026-06-11 00:00 |
10:26:26.04 |
+09:45:45.3 |
HIP 51213 |
17.97 |
| 2026-06-11 12:00 |
10:26:38.71 |
+09:44:20.5 |
HIP 51213 |
14.92 |
| 2026-06-12 00:00 |
10:26:51.51 |
+09:42:54.9 |
HIP 51213 |
12.03 |
| 2026-06-12 12:00 |
10:27:04.45 |
+09:41:28.6 |
HIP 51213 |
9.52 |
| 2026-06-13 00:00 |
10:27:17.52 |
+09:40:01.4 |
HIP 51213 |
7.79 |
| 2026-06-13 12:00 |
10:27:30.72 |
+09:38:33.5 |
HIP 51213 |
7.47 |
| 2026-06-14 00:00 |
10:27:44.05 |
+09:37:04.9 |
HIP 51213 |
8.75 |
| 2026-06-14 12:00 |
10:27:57.51 |
+09:35:35.4 |
HIP 51213 |
11.13 |
| 2026-06-15 00:00 |
10:28:11.10 |
+09:34:05.2 |
HIP 51316 |
11.04 |
| 2026-06-15 12:00 |
10:28:24.82 |
+09:32:34.3 |
HIP 51316 |
7.78 |
| 2026-06-16 00:00 |
10:28:38.66 |
+09:31:02.6 |
HIP 51316 |
5.12 |
| 2026-06-16 12:00 |
10:28:52.63 |
+09:29:30.1 |
HIP 51316 |
4.48 |
| 2026-06-17 00:00 |
10:29:06.72 |
+09:27:57.0 |
HIP 51316 |
6.53 |
| 2026-06-17 12:00 |
10:29:20.93 |
+09:26:23.0 |
HIP 51316 |
9.74 |
| 2026-06-18 00:00 |
10:29:35.27 |
+09:24:48.4 |
HIP 51316 |
13.31 |
| 2026-06-18 12:00 |
10:29:49.72 |
+09:23:13.0 |
HIP 51316 |
17.05 |
| 2026-06-19 00:00 |
10:30:04.30 |
+09:21:36.9 |
HIP 51316 |
20.88 |
| 2026-06-19 12:00 |
10:30:19.00 |
+09:20:00.1 |
HIP 51316 |
24.77 |
| 2026-06-20 00:00 |
10:30:33.81 |
+09:18:22.6 |
HIP 51582 |
24.36 |
| 2026-06-20 12:00 |
10:30:48.74 |
+09:16:44.3 |
HIP 51582 |
21.46 |
| 2026-06-21 00:00 |
10:31:03.79 |
+09:15:05.4 |
HIP 51582 |
18.96 |
| 2026-06-21 12:00 |
10:31:18.95 |
+09:13:25.7 |
HIP 51582 |
17.05 |
| 2026-06-22 00:00 |
10:31:34.23 |
+09:11:45.4 |
HIP 51582 |
15.98 |