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 |
-0.500 |
| 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) |
| 2026-09-20 00:00 |
21:48:00.78 |
-09:40:38.4 |
HIP 107589 |
9.47 |
| 2026-09-20 12:00 |
21:47:43.53 |
-09:41:54.9 |
HIP 107589 |
5.25 |
| 2026-09-21 00:00 |
21:47:26.46 |
-09:43:10.6 |
HIP 107589 |
2.23 |
| 2026-09-21 12:00 |
21:47:09.57 |
-09:44:25.6 |
HIP 107589 |
4.53 |
| 2026-09-22 00:00 |
21:46:52.85 |
-09:45:39.8 |
HIP 107589 |
8.55 |
| 2026-09-22 12:00 |
21:46:36.33 |
-09:46:53.3 |
HIP 107589 |
12.71 |
| 2026-09-23 00:00 |
21:46:19.99 |
-09:48:06.0 |
HIP 107589 |
16.86 |
| 2026-09-23 12:00 |
21:46:03.84 |
-09:49:17.9 |
HIP 107589 |
20.99 |
| 2026-09-24 00:00 |
21:45:47.88 |
-09:50:29.0 |
HIP 107589 |
25.08 |
| 2026-09-24 12:00 |
21:45:32.12 |
-09:51:39.3 |
HIP 107373 |
23.30 |
| 2026-09-25 00:00 |
21:45:16.56 |
-09:52:48.7 |
HIP 107373 |
20.85 |
| 2026-09-25 12:00 |
21:45:01.20 |
-09:53:57.3 |
HIP 107373 |
18.97 |
| 2026-09-26 00:00 |
21:44:46.04 |
-09:55:05.1 |
HIP 107373 |
17.78 |
| 2026-09-26 12:00 |
21:44:31.09 |
-09:56:12.0 |
HIP 107266 |
14.14 |
| 2026-09-27 00:00 |
21:44:16.35 |
-09:57:18.0 |
HIP 107266 |
10.36 |
| 2026-09-27 12:00 |
21:44:01.82 |
-09:58:23.2 |
HIP 107266 |
6.63 |
| 2026-09-28 00:00 |
21:43:47.51 |
-09:59:27.4 |
HIP 107266 |
3.00 |
| 2026-09-28 12:00 |
21:43:33.41 |
-10:00:30.7 |
HIP 107266 |
1.03 |
| 2026-09-29 00:00 |
21:43:19.53 |
-10:01:33.1 |
HIP 107266 |
4.35 |
| 2026-09-29 12:00 |
21:43:05.87 |
-10:02:34.6 |
HIP 107266 |
7.84 |
| 2026-09-30 00:00 |
21:42:52.44 |
-10:03:35.1 |
HIP 107266 |
11.29 |
| 2026-09-30 12:00 |
21:42:39.23 |
-10:04:34.6 |
HIP 107266 |
14.68 |
| 2026-10-01 00:00 |
21:42:26.25 |
-10:05:33.2 |
HIP 107266 |
18.02 |
| 2026-10-01 12:00 |
21:42:13.50 |
-10:06:30.8 |
HIP 107266 |
21.30 |
| 2026-10-02 00:00 |
21:42:00.98 |
-10:07:27.4 |
HIP 107266 |
24.52 |
| 2026-10-02 12:00 |
21:41:48.70 |
-10:08:23.0 |
HIP 107016 |
22.22 |
| 2026-10-03 00:00 |
21:41:36.66 |
-10:09:17.6 |
HIP 107016 |
19.99 |
| 2026-10-03 12:00 |
21:41:24.85 |
-10:10:11.1 |
HIP 107016 |
18.04 |
| 2026-10-04 00:00 |
21:41:13.29 |
-10:11:03.6 |
HIP 107016 |
16.46 |
| 2026-10-04 12:00 |
21:41:01.97 |
-10:11:55.1 |
HIP 107016 |
15.33 |
| 2026-10-05 00:00 |
21:40:50.90 |
-10:12:45.5 |
HIP 107016 |
14.70 |
| 2026-10-05 12:00 |
21:40:40.08 |
-10:13:34.8 |
HIP 107016 |
14.61 |
| 2026-10-06 00:00 |
21:40:29.50 |
-10:14:23.1 |
HIP 107016 |
15.03 |
| 2026-10-06 12:00 |
21:40:19.18 |
-10:15:10.2 |
HIP 107016 |
15.89 |
| 2026-10-07 00:00 |
21:40:09.11 |
-10:15:56.3 |
HIP 107016 |
17.09 |
| 2026-10-07 12:00 |
21:39:59.30 |
-10:16:41.2 |
HIP 107016 |
18.53 |
| 2026-10-08 00:00 |
21:39:49.75 |
-10:17:25.0 |
HIP 106938 |
17.99 |
| 2026-10-08 12:00 |
21:39:40.45 |
-10:18:07.7 |
HIP 106938 |
16.76 |
| 2026-10-09 00:00 |
21:39:31.41 |
-10:18:49.2 |
HIP 106938 |
15.81 |
| 2026-10-09 12:00 |
21:39:22.64 |
-10:19:29.6 |
HIP 106938 |
15.17 |
| 2026-10-10 00:00 |
21:39:14.14 |
-10:20:08.8 |
HIP 106938 |
14.86 |
| 2026-10-10 12:00 |
21:39:05.89 |
-10:20:46.9 |
HIP 106938 |
14.86 |
| 2026-10-11 00:00 |
21:38:57.92 |
-10:21:23.7 |
HIP 106938 |
15.15 |