메타데이터
| 항목 |
값 |
| Designation |
P/2011 Y2 (Boattini) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2012-03-21T16:42:15.212160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:59Z |
| Obs used |
92 |
| NEO |
- |
| M1 |
13.600 |
| K1 |
16.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-12-28.0000000 |
| e |
0.71292045 |
| q (au) |
1.787148 |
| a (au) |
6.225270 |
| i (deg) |
6.351399 |
| Ω (om, deg) |
310.018388 |
| ω (w, deg) |
131.187614 |
| M (ma, deg) |
354.625603 |
밝기
산란 + 전체 선형
$$
M_a = (13.174 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.174 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.518 |
| k |
1.000 |
| δ90 |
5.312 |
| 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) |
| 2026-03-26 00:00 |
21:49:15.20 |
-12:15:53.4 |
HIP 107632 |
18.80 |
| 2026-03-26 12:00 |
21:49:37.92 |
-12:13:39.9 |
HIP 107632 |
23.45 |
| 2026-03-27 00:00 |
21:50:00.58 |
-12:11:26.4 |
HIP 107632 |
28.59 |
| 2026-03-27 12:00 |
21:50:23.19 |
-12:09:13.0 |
HIP 107758 |
29.73 |
| 2026-03-28 00:00 |
21:50:45.75 |
-12:06:59.7 |
HIP 107758 |
29.89 |
| 2026-03-28 12:00 |
21:51:08.25 |
-12:04:46.5 |
HIP 107758 |
31.20 |
| 2026-03-29 00:00 |
21:51:30.69 |
-12:02:33.3 |
HIP 107758 |
33.52 |
| 2026-03-29 12:00 |
21:51:53.08 |
-12:00:20.2 |
HIP 107778 |
35.67 |
| 2026-03-30 00:00 |
21:52:15.41 |
-11:58:07.2 |
HIP 107778 |
38.61 |
| 2026-03-30 12:00 |
21:52:37.68 |
-11:55:54.3 |
HIP 108180 |
35.33 |
| 2026-03-31 00:00 |
21:52:59.89 |
-11:53:41.5 |
HIP 108180 |
30.16 |
| 2026-03-31 12:00 |
21:53:22.04 |
-11:51:28.8 |
HIP 108180 |
25.32 |
| 2026-04-01 00:00 |
21:53:44.13 |
-11:49:16.1 |
HIP 108180 |
21.00 |
| 2026-04-01 12:00 |
21:54:06.17 |
-11:47:03.6 |
HIP 108180 |
17.60 |
| 2026-04-02 00:00 |
21:54:28.14 |
-11:44:51.2 |
HIP 108180 |
15.70 |
| 2026-04-02 12:00 |
21:54:50.05 |
-11:42:38.9 |
HIP 108180 |
15.83 |
| 2026-04-03 00:00 |
21:55:11.89 |
-11:40:26.7 |
HIP 108180 |
17.94 |
| 2026-04-03 12:00 |
21:55:33.67 |
-11:38:14.7 |
HIP 108180 |
21.44 |
| 2026-04-04 00:00 |
21:55:55.39 |
-11:36:02.7 |
HIP 108265 |
20.85 |
| 2026-04-04 12:00 |
21:56:17.05 |
-11:33:50.9 |
HIP 108265 |
19.00 |
| 2026-04-05 00:00 |
21:56:38.64 |
-11:31:39.2 |
HIP 108265 |
18.79 |
| 2026-04-05 12:00 |
21:57:00.16 |
-11:29:27.7 |
HIP 108265 |
20.25 |
| 2026-04-06 00:00 |
21:57:21.62 |
-11:27:16.3 |
HIP 108265 |
23.06 |
| 2026-04-06 12:00 |
21:57:43.01 |
-11:25:05.0 |
HIP 108516 |
20.80 |
| 2026-04-07 00:00 |
21:58:04.33 |
-11:22:53.9 |
HIP 108516 |
15.14 |
| 2026-04-07 12:00 |
21:58:25.58 |
-11:20:43.0 |
HIP 108516 |
9.49 |
| 2026-04-08 00:00 |
21:58:46.76 |
-11:18:32.2 |
HIP 108516 |
3.86 |
| 2026-04-08 12:00 |
21:59:07.88 |
-11:16:21.6 |
HIP 108516 |
1.76 |
| 2026-04-09 00:00 |
21:59:28.92 |
-11:14:11.2 |
HIP 108516 |
7.35 |
| 2026-04-09 12:00 |
21:59:49.89 |
-11:12:00.9 |
HIP 108516 |
12.94 |
| 2026-04-10 00:00 |
22:00:10.79 |
-11:09:50.8 |
HIP 108703 |
18.48 |
| 2026-04-10 12:00 |
22:00:31.61 |
-11:07:40.9 |
HIP 108703 |
16.30 |
| 2026-04-11 00:00 |
22:00:52.36 |
-11:05:31.2 |
HIP 108703 |
15.85 |
| 2026-04-11 12:00 |
22:01:13.04 |
-11:03:21.8 |
HIP 108703 |
17.25 |
| 2026-04-12 00:00 |
22:01:33.64 |
-11:01:12.5 |
HIP 108703 |
20.11 |
| 2026-04-12 12:00 |
22:01:54.16 |
-10:59:03.4 |
HIP 108703 |
23.90 |
| 2026-04-13 00:00 |
22:02:14.61 |
-10:56:54.5 |
HIP 108703 |
28.24 |
| 2026-04-13 12:00 |
22:02:34.98 |
-10:54:45.9 |
HIP 108979 |
30.70 |
| 2026-04-14 00:00 |
22:02:55.27 |
-10:52:37.5 |
HIP 108979 |
25.67 |
| 2026-04-14 12:00 |
22:03:15.47 |
-10:50:29.3 |
HIP 108979 |
20.87 |
| 2026-04-15 00:00 |
22:03:35.60 |
-10:48:21.4 |
HIP 108979 |
16.46 |
| 2026-04-15 12:00 |
22:03:55.65 |
-10:46:13.7 |
HIP 108979 |
12.82 |
| 2026-04-16 00:00 |
22:04:15.61 |
-10:44:06.2 |
HIP 108979 |
10.75 |