메타데이터
| 항목 |
값 |
| Designation |
229P/Gibbs |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-05-20T22:45:24.773760Z |
| Orbit solution date (soln_date, UTC) |
2025-07-31T12:12:41Z |
| Obs used |
293 |
| NEO |
- |
| M1 |
13.900 |
| K1 |
9.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-10-15.0000000 |
| e |
0.37605919 |
| q (au) |
2.454753 |
| a (au) |
3.934273 |
| i (deg) |
26.069392 |
| Ω (om, deg) |
157.911010 |
| ω (w, deg) |
224.219557 |
| M (ma, deg) |
286.246652 |
밝기
산란 + 전체 선형
$$
M_a = (11.599 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.599 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.822 |
| k |
0.997 |
| δ90 |
9.926 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
08:46:10.62 |
+08:31:16.2 |
HIP 43084 |
5.97 |
| 2026-07-29 12:00 |
08:46:45.97 |
+08:30:05.7 |
HIP 43084 |
3.65 |
| 2026-07-30 00:00 |
08:47:21.29 |
+08:28:54.6 |
HIP 43084 |
12.10 |
| 2026-07-30 12:00 |
08:47:56.58 |
+08:27:42.8 |
HIP 43084 |
20.85 |
| 2026-07-31 00:00 |
08:48:31.84 |
+08:26:30.4 |
HIP 43369 |
24.43 |
| 2026-07-31 12:00 |
08:49:07.07 |
+08:25:17.3 |
HIP 43369 |
16.18 |
| 2026-08-01 00:00 |
08:49:42.27 |
+08:24:03.6 |
HIP 43369 |
9.03 |
| 2026-08-01 12:00 |
08:50:17.44 |
+08:22:49.2 |
HIP 43369 |
7.45 |
| 2026-08-02 00:00 |
08:50:52.58 |
+08:21:34.2 |
HIP 43369 |
13.55 |
| 2026-08-02 12:00 |
08:51:27.69 |
+08:20:18.6 |
HIP 43557 |
20.42 |
| 2026-08-03 00:00 |
08:52:02.77 |
+08:19:02.4 |
HIP 43557 |
15.59 |
| 2026-08-03 12:00 |
08:52:37.82 |
+08:17:45.6 |
HIP 43557 |
14.93 |
| 2026-08-04 00:00 |
08:53:12.83 |
+08:16:28.1 |
HIP 43692 |
14.20 |
| 2026-08-04 12:00 |
08:53:47.81 |
+08:15:10.0 |
HIP 43692 |
10.42 |
| 2026-08-05 00:00 |
08:54:22.76 |
+08:13:51.4 |
HIP 43692 |
12.99 |
| 2026-08-05 12:00 |
08:54:57.68 |
+08:12:32.1 |
HIP 43692 |
19.54 |
| 2026-08-06 00:00 |
08:55:32.56 |
+08:11:12.2 |
HIP 43692 |
27.34 |
| 2026-08-06 12:00 |
08:56:07.41 |
+08:09:51.8 |
HIP 43692 |
35.58 |
| 2026-08-07 00:00 |
08:56:42.22 |
+08:08:30.8 |
HIP 44079 |
30.90 |
| 2026-08-07 12:00 |
08:57:17.00 |
+08:07:09.2 |
HIP 44079 |
22.78 |
| 2026-08-08 00:00 |
08:57:51.74 |
+08:05:47.0 |
HIP 44079 |
15.34 |
| 2026-08-08 12:00 |
08:58:26.45 |
+08:04:24.2 |
HIP 44079 |
10.18 |
| 2026-08-09 00:00 |
08:59:01.12 |
+08:03:00.9 |
HIP 44079 |
11.11 |
| 2026-08-09 12:00 |
08:59:35.75 |
+08:01:37.1 |
HIP 44079 |
17.15 |
| 2026-08-10 00:00 |
09:00:10.34 |
+08:00:12.7 |
HIP 44079 |
24.81 |
| 2026-08-10 12:00 |
09:00:44.90 |
+07:58:47.8 |
HIP 44079 |
32.98 |
| 2026-08-11 00:00 |
09:01:19.42 |
+07:57:22.3 |
HIP 44376 |
34.17 |
| 2026-08-11 12:00 |
09:01:53.89 |
+07:55:56.3 |
HIP 44376 |
32.82 |
| 2026-08-12 00:00 |
09:02:28.33 |
+07:54:29.8 |
HIP 44376 |
33.71 |
| 2026-08-12 12:00 |
09:03:02.73 |
+07:53:02.7 |
HIP 44406 |
35.43 |
| 2026-08-13 00:00 |
09:03:37.08 |
+07:51:35.2 |
HIP 44406 |
36.09 |
| 2026-08-13 12:00 |
09:04:11.39 |
+07:50:07.2 |
HIP 44406 |
38.71 |
| 2026-08-14 00:00 |
09:04:45.66 |
+07:48:38.6 |
HIP 44406 |
42.92 |
| 2026-08-14 12:00 |
09:05:19.89 |
+07:47:09.6 |
HIP 44780 |
38.59 |
| 2026-08-15 00:00 |
09:05:54.07 |
+07:45:40.1 |
HIP 44780 |
30.52 |
| 2026-08-15 12:00 |
09:06:28.21 |
+07:44:10.1 |
HIP 44780 |
22.84 |
| 2026-08-16 00:00 |
09:07:02.31 |
+07:42:39.7 |
HIP 44780 |
16.12 |
| 2026-08-16 12:00 |
09:07:36.35 |
+07:41:08.8 |
HIP 44780 |
12.05 |
| 2026-08-17 00:00 |
09:08:10.36 |
+07:39:37.4 |
HIP 44878 |
7.53 |
| 2026-08-17 12:00 |
09:08:44.31 |
+07:38:05.6 |
HIP 44878 |
1.54 |
| 2026-08-18 00:00 |
09:09:18.22 |
+07:36:33.4 |
HIP 44916 |
7.04 |
| 2026-08-18 12:00 |
09:09:52.08 |
+07:35:00.7 |
HIP 45010 |
4.59 |
| 2026-08-19 00:00 |
09:10:25.89 |
+07:33:27.6 |
HIP 45010 |
5.97 |