메타데이터
| 항목 |
값 |
| Designation |
C/2011 L2 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-11-01T06:33:18.060480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:51Z |
| Obs used |
57 |
| NEO |
- |
| M1 |
11.800 |
| K1 |
13.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-09-08.0000000 |
| e |
1.00177257 |
| q (au) |
1.943449 |
| a (au) |
-1096.399619 |
| i (deg) |
104.257426 |
| Ω (om, deg) |
131.347725 |
| ω (w, deg) |
257.028128 |
| M (ma, deg) |
-0.001473 |
밝기
산란 + 전체 선형
$$
M_a = (18.228 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
18.228 |
| 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) |
| 2026-05-12 00:00 |
08:50:18.57 |
+65:43:38.0 |
HIP 43586 |
15.76 |
| 2026-05-12 12:00 |
08:50:20.17 |
+65:42:59.5 |
HIP 43586 |
15.91 |
| 2026-05-13 00:00 |
08:50:21.84 |
+65:42:20.9 |
HIP 43586 |
16.09 |
| 2026-05-13 12:00 |
08:50:23.57 |
+65:41:42.4 |
HIP 43586 |
16.29 |
| 2026-05-14 00:00 |
08:50:25.38 |
+65:41:03.9 |
HIP 43586 |
16.50 |
| 2026-05-14 12:00 |
08:50:27.26 |
+65:40:25.3 |
HIP 43586 |
16.74 |
| 2026-05-15 00:00 |
08:50:29.20 |
+65:39:46.8 |
HIP 43586 |
16.99 |
| 2026-05-15 12:00 |
08:50:31.21 |
+65:39:08.3 |
HIP 43586 |
17.26 |
| 2026-05-16 00:00 |
08:50:33.30 |
+65:38:29.9 |
HIP 43586 |
17.54 |
| 2026-05-16 12:00 |
08:50:35.45 |
+65:37:51.4 |
HIP 43586 |
17.84 |
| 2026-05-17 00:00 |
08:50:37.66 |
+65:37:13.0 |
HIP 43586 |
18.16 |
| 2026-05-17 12:00 |
08:50:39.95 |
+65:36:34.6 |
HIP 43586 |
18.49 |
| 2026-05-18 00:00 |
08:50:42.30 |
+65:35:56.2 |
HIP 43586 |
18.83 |
| 2026-05-18 12:00 |
08:50:44.72 |
+65:35:17.9 |
HIP 43586 |
19.19 |
| 2026-05-19 00:00 |
08:50:47.20 |
+65:34:39.6 |
HIP 43586 |
19.56 |
| 2026-05-19 12:00 |
08:50:49.75 |
+65:34:01.3 |
HIP 43586 |
19.94 |
| 2026-05-20 00:00 |
08:50:52.37 |
+65:33:23.1 |
HIP 43586 |
20.34 |
| 2026-05-20 12:00 |
08:50:55.05 |
+65:32:44.9 |
HIP 43586 |
20.74 |
| 2026-05-21 00:00 |
08:50:57.80 |
+65:32:06.7 |
HIP 43586 |
21.16 |
| 2026-05-21 12:00 |
08:51:00.61 |
+65:31:28.7 |
HIP 43586 |
21.59 |
| 2026-05-22 00:00 |
08:51:03.49 |
+65:30:50.6 |
HIP 43586 |
22.03 |
| 2026-05-22 12:00 |
08:51:06.43 |
+65:30:12.6 |
HIP 43586 |
22.48 |
| 2026-05-23 00:00 |
08:51:09.43 |
+65:29:34.7 |
HIP 43586 |
22.93 |
| 2026-05-23 12:00 |
08:51:12.50 |
+65:28:56.9 |
HIP 43586 |
23.40 |
| 2026-05-24 00:00 |
08:51:15.63 |
+65:28:19.1 |
HIP 43586 |
23.87 |
| 2026-05-24 12:00 |
08:51:18.82 |
+65:27:41.3 |
HIP 43586 |
24.35 |
| 2026-05-25 00:00 |
08:51:22.07 |
+65:27:03.7 |
HIP 43586 |
24.84 |
| 2026-05-25 12:00 |
08:51:25.38 |
+65:26:26.1 |
HIP 43586 |
25.34 |
| 2026-05-26 00:00 |
08:51:28.76 |
+65:25:48.6 |
HIP 43586 |
25.85 |
| 2026-05-26 12:00 |
08:51:32.20 |
+65:25:11.1 |
HIP 43586 |
26.36 |
| 2026-05-27 00:00 |
08:51:35.69 |
+65:24:33.7 |
HIP 43586 |
26.88 |
| 2026-05-27 12:00 |
08:51:39.25 |
+65:23:56.4 |
HIP 43586 |
27.40 |
| 2026-05-28 00:00 |
08:51:42.87 |
+65:23:19.2 |
HIP 43586 |
27.93 |
| 2026-05-28 12:00 |
08:51:46.54 |
+65:22:42.1 |
HIP 43586 |
28.47 |
| 2026-05-29 00:00 |
08:51:50.28 |
+65:22:05.1 |
HIP 43586 |
29.01 |
| 2026-05-29 12:00 |
08:51:54.07 |
+65:21:28.1 |
HIP 43586 |
29.56 |
| 2026-05-30 00:00 |
08:51:57.92 |
+65:20:51.3 |
HIP 43586 |
30.11 |
| 2026-05-30 12:00 |
08:52:01.83 |
+65:20:14.5 |
HIP 43399 |
30.14 |
| 2026-05-31 00:00 |
08:52:05.80 |
+65:19:37.8 |
HIP 43399 |
29.72 |
| 2026-05-31 12:00 |
08:52:09.83 |
+65:19:01.3 |
HIP 43399 |
29.31 |
| 2026-06-01 00:00 |
08:52:13.91 |
+65:18:24.8 |
HIP 43399 |
28.91 |
| 2026-06-01 12:00 |
08:52:18.05 |
+65:17:48.4 |
HIP 43399 |
28.54 |
| 2026-06-02 00:00 |
08:52:22.24 |
+65:17:12.1 |
HIP 43399 |
28.18 |