메타데이터
| 항목 |
값 |
| Designation |
P/2011 JB15 (Spacewatch-Boattini) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2012-01-21T16:06:25.079040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:49Z |
| Obs used |
120 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
13.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-06-09.0000000 |
| e |
0.31873584 |
| q (au) |
5.018710 |
| a (au) |
7.366761 |
| i (deg) |
19.141273 |
| Ω (om, deg) |
153.768180 |
| ω (w, deg) |
110.926709 |
| M (ma, deg) |
348.826598 |
밝기
산란 + 전체 선형
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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) |
| 2026-07-29 00:00 |
08:59:53.83 |
+11:13:31.8 |
HIP 44050 |
33.11 |
| 2026-07-29 12:00 |
09:00:09.93 |
+11:12:43.8 |
HIP 44303 |
33.86 |
| 2026-07-30 00:00 |
09:00:26.04 |
+11:11:55.6 |
HIP 44303 |
31.23 |
| 2026-07-30 12:00 |
09:00:42.17 |
+11:11:07.1 |
HIP 44303 |
28.92 |
| 2026-07-31 00:00 |
09:00:58.29 |
+11:10:18.3 |
HIP 44303 |
27.01 |
| 2026-07-31 12:00 |
09:01:14.43 |
+11:09:29.3 |
HIP 44303 |
25.60 |
| 2026-08-01 00:00 |
09:01:30.57 |
+11:08:40.1 |
HIP 44303 |
24.77 |
| 2026-08-01 12:00 |
09:01:46.72 |
+11:07:50.6 |
HIP 44303 |
24.58 |
| 2026-08-02 00:00 |
09:02:02.88 |
+11:07:00.8 |
HIP 44303 |
25.05 |
| 2026-08-02 12:00 |
09:02:19.04 |
+11:06:10.8 |
HIP 44497 |
24.41 |
| 2026-08-03 00:00 |
09:02:35.21 |
+11:05:20.6 |
HIP 44497 |
20.62 |
| 2026-08-03 12:00 |
09:02:51.38 |
+11:04:30.1 |
HIP 44497 |
16.95 |
| 2026-08-04 00:00 |
09:03:07.56 |
+11:03:39.4 |
HIP 44497 |
13.51 |
| 2026-08-04 12:00 |
09:03:23.74 |
+11:02:48.5 |
HIP 44497 |
10.51 |
| 2026-08-05 00:00 |
09:03:39.93 |
+11:01:57.3 |
HIP 44497 |
8.45 |
| 2026-08-05 12:00 |
09:03:56.11 |
+11:01:05.9 |
HIP 44497 |
8.09 |
| 2026-08-06 00:00 |
09:04:12.30 |
+11:00:14.3 |
HIP 44497 |
9.62 |
| 2026-08-06 12:00 |
09:04:28.49 |
+10:59:22.4 |
HIP 44548 |
8.55 |
| 2026-08-07 00:00 |
09:04:44.68 |
+10:58:30.4 |
HIP 44548 |
7.80 |
| 2026-08-07 12:00 |
09:05:00.88 |
+10:57:38.1 |
HIP 44548 |
9.03 |
| 2026-08-08 00:00 |
09:05:17.07 |
+10:56:45.5 |
HIP 44548 |
11.63 |
| 2026-08-08 12:00 |
09:05:33.26 |
+10:55:52.8 |
HIP 44548 |
14.91 |
| 2026-08-09 00:00 |
09:05:49.45 |
+10:54:59.9 |
HIP 44548 |
18.50 |
| 2026-08-09 12:00 |
09:06:05.64 |
+10:54:06.7 |
HIP 44548 |
22.26 |
| 2026-08-10 00:00 |
09:06:21.83 |
+10:53:13.4 |
HIP 44798 |
24.25 |
| 2026-08-10 12:00 |
09:06:38.01 |
+10:52:19.8 |
HIP 44798 |
20.47 |
| 2026-08-11 00:00 |
09:06:54.19 |
+10:51:26.1 |
HIP 44798 |
16.83 |
| 2026-08-11 12:00 |
09:07:10.37 |
+10:50:32.1 |
HIP 44798 |
13.44 |
| 2026-08-12 00:00 |
09:07:26.54 |
+10:49:38.0 |
HIP 44798 |
10.54 |
| 2026-08-12 12:00 |
09:07:42.71 |
+10:48:43.6 |
HIP 44798 |
8.65 |
| 2026-08-13 00:00 |
09:07:58.87 |
+10:47:49.1 |
HIP 44798 |
8.46 |
| 2026-08-13 12:00 |
09:08:15.03 |
+10:46:54.4 |
HIP 44798 |
10.07 |
| 2026-08-14 00:00 |
09:08:31.17 |
+10:45:59.5 |
HIP 44935 |
10.16 |
| 2026-08-14 12:00 |
09:08:47.31 |
+10:45:04.4 |
HIP 44935 |
7.06 |
| 2026-08-15 00:00 |
09:09:03.45 |
+10:44:09.2 |
HIP 44935 |
5.44 |
| 2026-08-15 12:00 |
09:09:19.57 |
+10:43:13.8 |
HIP 44935 |
6.51 |
| 2026-08-16 00:00 |
09:09:35.68 |
+10:42:18.2 |
HIP 44935 |
9.40 |
| 2026-08-16 12:00 |
09:09:51.78 |
+10:41:22.5 |
HIP 44991 |
11.95 |
| 2026-08-17 00:00 |
09:10:07.88 |
+10:40:26.6 |
HIP 44991 |
11.88 |
| 2026-08-17 12:00 |
09:10:23.96 |
+10:39:30.5 |
HIP 44991 |
13.13 |
| 2026-08-18 00:00 |
09:10:40.03 |
+10:38:34.3 |
HIP 44991 |
15.38 |
| 2026-08-18 12:00 |
09:10:56.08 |
+10:37:38.0 |
HIP 44991 |
18.26 |
| 2026-08-19 00:00 |
09:11:12.13 |
+10:36:41.5 |
HIP 44991 |
21.52 |