메타데이터
| 항목 |
값 |
| Designation |
206P/Barnard-Boattini |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2008-10-24T01:07:08.970240Z |
| Orbit solution date (soln_date, UTC) |
2023-10-09T23:01:17Z |
| Obs used |
284 |
| NEO |
Yes |
| M1 |
20.300 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2006-07-06.0000000 |
| e |
0.64853407 |
| q (au) |
1.136482 |
| a (au) |
3.233549 |
| i (deg) |
33.203832 |
| Ω (om, deg) |
204.376478 |
| ω (w, deg) |
181.361053 |
| M (ma, deg) |
217.437581 |
밝기
산란 + 전체 선형
$$
M_a = (20.000 + 2.307\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
20.000 |
| n |
2.307 |
| gf |
1.000 |
| gb |
-0.849 |
| k |
0.973 |
| 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) |
| 2026-07-29 00:00 |
16:35:47.22 |
+13:42:56.6 |
HIP 81291 |
24.91 |
| 2026-07-29 12:00 |
16:35:39.02 |
+13:40:29.8 |
HIP 81291 |
23.15 |
| 2026-07-30 00:00 |
16:35:31.09 |
+13:38:01.3 |
HIP 81291 |
21.65 |
| 2026-07-30 12:00 |
16:35:23.44 |
+13:35:31.1 |
HIP 81291 |
20.46 |
| 2026-07-31 00:00 |
16:35:16.08 |
+13:32:59.2 |
HIP 81291 |
19.63 |
| 2026-07-31 12:00 |
16:35:08.99 |
+13:30:25.7 |
HIP 81291 |
19.20 |
| 2026-08-01 00:00 |
16:35:02.19 |
+13:27:50.5 |
HIP 81095 |
17.96 |
| 2026-08-01 12:00 |
16:34:55.67 |
+13:25:13.8 |
HIP 81095 |
15.96 |
| 2026-08-02 00:00 |
16:34:49.43 |
+13:22:35.6 |
HIP 81095 |
14.41 |
| 2026-08-02 12:00 |
16:34:43.48 |
+13:19:55.7 |
HIP 81095 |
13.46 |
| 2026-08-03 00:00 |
16:34:37.81 |
+13:17:14.4 |
HIP 81095 |
13.23 |
| 2026-08-03 12:00 |
16:34:32.42 |
+13:14:31.6 |
HIP 81095 |
13.74 |
| 2026-08-04 00:00 |
16:34:27.32 |
+13:11:47.3 |
HIP 81095 |
14.92 |
| 2026-08-04 12:00 |
16:34:22.51 |
+13:09:01.6 |
HIP 81095 |
16.62 |
| 2026-08-05 00:00 |
16:34:17.98 |
+13:06:14.4 |
HIP 81095 |
18.70 |
| 2026-08-05 12:00 |
16:34:13.74 |
+13:03:25.9 |
HIP 81095 |
21.04 |
| 2026-08-06 00:00 |
16:34:09.78 |
+13:00:36.0 |
HIP 81095 |
23.57 |
| 2026-08-06 12:00 |
16:34:06.11 |
+12:57:44.7 |
HIP 80997 |
25.91 |
| 2026-08-07 00:00 |
16:34:02.73 |
+12:54:52.2 |
HIP 81018 |
26.08 |
| 2026-08-07 12:00 |
16:33:59.64 |
+12:51:58.3 |
HIP 81018 |
23.58 |
| 2026-08-08 00:00 |
16:33:56.84 |
+12:49:03.1 |
HIP 81018 |
21.26 |
| 2026-08-08 12:00 |
16:33:54.32 |
+12:46:06.8 |
HIP 81018 |
19.17 |
| 2026-08-09 00:00 |
16:33:52.10 |
+12:43:09.1 |
HIP 81018 |
17.41 |
| 2026-08-09 12:00 |
16:33:50.16 |
+12:40:10.3 |
HIP 81018 |
16.10 |
| 2026-08-10 00:00 |
16:33:48.51 |
+12:37:10.3 |
HIP 81018 |
15.34 |
| 2026-08-10 12:00 |
16:33:47.15 |
+12:34:09.2 |
HIP 81018 |
15.24 |
| 2026-08-11 00:00 |
16:33:46.09 |
+12:31:07.0 |
HIP 81018 |
15.80 |
| 2026-08-11 12:00 |
16:33:45.31 |
+12:28:03.6 |
HIP 81018 |
16.97 |
| 2026-08-12 00:00 |
16:33:44.82 |
+12:24:59.2 |
HIP 81018 |
18.65 |
| 2026-08-12 12:00 |
16:33:44.62 |
+12:21:53.8 |
HIP 81018 |
20.71 |
| 2026-08-13 00:00 |
16:33:44.72 |
+12:18:47.3 |
HIP 81018 |
23.06 |
| 2026-08-13 12:00 |
16:33:45.10 |
+12:15:39.8 |
HIP 81018 |
25.63 |
| 2026-08-14 00:00 |
16:33:45.77 |
+12:12:31.4 |
HIP 81013 |
25.19 |
| 2026-08-14 12:00 |
16:33:46.73 |
+12:09:22.0 |
HIP 81013 |
23.03 |
| 2026-08-15 00:00 |
16:33:47.98 |
+12:06:11.8 |
HIP 81013 |
21.18 |
| 2026-08-15 12:00 |
16:33:49.52 |
+12:03:00.6 |
HIP 81013 |
19.72 |
| 2026-08-16 00:00 |
16:33:51.35 |
+11:59:48.6 |
HIP 81013 |
18.77 |
| 2026-08-16 12:00 |
16:33:53.47 |
+11:56:35.7 |
HIP 81013 |
18.41 |
| 2026-08-17 00:00 |
16:33:55.87 |
+11:53:22.0 |
HIP 81013 |
18.70 |
| 2026-08-17 12:00 |
16:33:58.56 |
+11:50:07.6 |
HIP 81013 |
19.61 |
| 2026-08-18 00:00 |
16:34:01.54 |
+11:46:52.4 |
HIP 81013 |
21.08 |
| 2026-08-18 12:00 |
16:34:04.80 |
+11:43:36.4 |
HIP 81175 |
22.46 |
| 2026-08-19 00:00 |
16:34:08.34 |
+11:40:19.7 |
HIP 81175 |
19.20 |