P/2012 NJ (La Sagra)
메타데이터
| 항목 |
값 |
| Designation |
P/2012 NJ (La Sagra) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2012-06-13T02:10:00.287040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:19Z |
| Obs used |
2490 |
| NEO |
Yes |
| M1 |
14.800 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-08-19.0000000 |
| e |
0.84806204 |
| q (au) |
1.291890 |
| a (au) |
8.502747 |
| i (deg) |
84.375461 |
| Ω (om, deg) |
315.763185 |
| ω (w, deg) |
338.413906 |
| M (ma, deg) |
2.659833 |
밝기
산란 + 전체 선형
$$
M_a = (15.413 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.413 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.800 |
| 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 |
09:32:24.94 |
+35:27:18.8 |
HIP 46766 |
20.85 |
| 2026-02-03 12:00 |
09:32:15.21 |
+35:27:48.9 |
HIP 46766 |
19.86 |
| 2026-02-04 00:00 |
09:32:05.47 |
+35:28:18.6 |
HIP 46766 |
19.05 |
| 2026-02-04 12:00 |
09:31:55.71 |
+35:28:47.9 |
HIP 46766 |
18.43 |
| 2026-02-05 00:00 |
09:31:45.95 |
+35:29:16.8 |
HIP 46636 |
17.21 |
| 2026-02-05 12:00 |
09:31:36.18 |
+35:29:45.3 |
HIP 46636 |
15.87 |
| 2026-02-06 00:00 |
09:31:26.40 |
+35:30:13.4 |
HIP 46636 |
14.70 |
| 2026-02-06 12:00 |
09:31:16.61 |
+35:30:41.1 |
HIP 46636 |
13.73 |
| 2026-02-07 00:00 |
09:31:06.81 |
+35:31:08.4 |
HIP 46636 |
13.00 |
| 2026-02-07 12:00 |
09:30:57.01 |
+35:31:35.3 |
HIP 46636 |
12.56 |
| 2026-02-08 00:00 |
09:30:47.21 |
+35:32:01.8 |
HIP 46636 |
12.44 |
| 2026-02-08 12:00 |
09:30:37.40 |
+35:32:27.8 |
HIP 46636 |
12.64 |
| 2026-02-09 00:00 |
09:30:27.59 |
+35:32:53.4 |
HIP 46636 |
13.16 |
| 2026-02-09 12:00 |
09:30:17.78 |
+35:33:18.6 |
HIP 46636 |
13.95 |
| 2026-02-10 00:00 |
09:30:07.96 |
+35:33:43.3 |
HIP 46636 |
14.98 |
| 2026-02-10 12:00 |
09:29:58.15 |
+35:34:07.6 |
HIP 46636 |
16.19 |
| 2026-02-11 00:00 |
09:29:48.33 |
+35:34:31.5 |
HIP 46636 |
17.55 |
| 2026-02-11 12:00 |
09:29:38.52 |
+35:34:54.9 |
HIP 46636 |
19.02 |
| 2026-02-12 00:00 |
09:29:28.72 |
+35:35:17.9 |
HIP 46636 |
20.59 |
| 2026-02-12 12:00 |
09:29:18.91 |
+35:35:40.5 |
HIP 46636 |
22.22 |
| 2026-02-13 00:00 |
09:29:09.11 |
+35:36:02.5 |
HIP 46636 |
23.91 |
| 2026-02-13 12:00 |
09:28:59.32 |
+35:36:24.2 |
HIP 46636 |
25.64 |
| 2026-02-14 00:00 |
09:28:49.53 |
+35:36:45.3 |
HIP 46636 |
27.41 |
| 2026-02-14 12:00 |
09:28:39.75 |
+35:37:06.1 |
HIP 46636 |
29.20 |
| 2026-02-15 00:00 |
09:28:29.98 |
+35:37:26.3 |
HIP 46282 |
27.25 |
| 2026-02-15 12:00 |
09:28:20.22 |
+35:37:46.1 |
HIP 46282 |
25.24 |
| 2026-02-16 00:00 |
09:28:10.46 |
+35:38:05.4 |
HIP 46282 |
23.23 |
| 2026-02-16 12:00 |
09:28:00.72 |
+35:38:24.3 |
HIP 46282 |
21.23 |
| 2026-02-17 00:00 |
09:27:51.00 |
+35:38:42.6 |
HIP 46282 |
19.23 |
| 2026-02-17 12:00 |
09:27:41.28 |
+35:39:00.5 |
HIP 46282 |
17.23 |
| 2026-02-18 00:00 |
09:27:31.58 |
+35:39:18.0 |
HIP 46282 |
15.25 |
| 2026-02-18 12:00 |
09:27:21.90 |
+35:39:34.9 |
HIP 46282 |
13.26 |
| 2026-02-19 00:00 |
09:27:12.23 |
+35:39:51.4 |
HIP 46282 |
11.28 |
| 2026-02-19 12:00 |
09:27:02.58 |
+35:40:07.3 |
HIP 46282 |
9.31 |
| 2026-02-20 00:00 |
09:26:52.95 |
+35:40:22.8 |
HIP 46282 |
7.36 |
| 2026-02-20 12:00 |
09:26:43.33 |
+35:40:37.8 |
HIP 46282 |
5.41 |
| 2026-02-21 00:00 |
09:26:33.74 |
+35:40:52.4 |
HIP 46282 |
3.50 |
| 2026-02-21 12:00 |
09:26:24.17 |
+35:41:06.4 |
HIP 46282 |
1.74 |
| 2026-02-22 00:00 |
09:26:14.61 |
+35:41:19.9 |
HIP 46282 |
1.19 |
| 2026-02-22 12:00 |
09:26:05.09 |
+35:41:33.0 |
HIP 46282 |
2.73 |
| 2026-02-23 00:00 |
09:25:55.58 |
+35:41:45.5 |
HIP 46282 |
4.58 |
| 2026-02-23 12:00 |
09:25:46.10 |
+35:41:57.6 |
HIP 46282 |
6.48 |
| 2026-02-24 00:00 |
09:25:36.65 |
+35:42:09.1 |
HIP 46282 |
8.39 |