메타데이터
| 항목 |
값 |
| Designation |
268P/Bernardi |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-04-26T21:23:12.413760Z |
| Orbit solution date (soln_date, UTC) |
2026-04-27T13:42:34Z |
| Obs used |
218 |
| NEO |
- |
| M1 |
17.200 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2016-08-31.0000000 |
| e |
0.46979297 |
| q (au) |
2.418605 |
| a (au) |
4.561624 |
| i (deg) |
16.096802 |
| Ω (om, deg) |
127.628210 |
| ω (w, deg) |
0.311064 |
| M (ma, deg) |
49.783578 |
밝기
산란 + 전체 선형
$$
M_a = (16.702 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.702 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.806 |
| k |
0.998 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
15:44:53.12 |
+00:24:42.3 |
HIP 77120 |
16.52 |
| 2026-05-12 12:00 |
15:44:33.30 |
+00:25:31.7 |
HIP 77120 |
16.25 |
| 2026-05-13 00:00 |
15:44:13.46 |
+00:26:19.6 |
HIP 77120 |
17.51 |
| 2026-05-13 12:00 |
15:43:53.61 |
+00:27:05.9 |
HIP 77120 |
20.01 |
| 2026-05-14 00:00 |
15:43:33.75 |
+00:27:50.7 |
HIP 76892 |
23.09 |
| 2026-05-14 12:00 |
15:43:13.88 |
+00:28:33.9 |
HIP 76892 |
18.16 |
| 2026-05-15 00:00 |
15:42:54.01 |
+00:29:15.5 |
HIP 76892 |
13.28 |
| 2026-05-15 12:00 |
15:42:34.14 |
+00:29:55.5 |
HIP 76892 |
8.56 |
| 2026-05-16 00:00 |
15:42:14.28 |
+00:30:33.9 |
HIP 76892 |
4.50 |
| 2026-05-16 12:00 |
15:41:54.43 |
+00:31:10.7 |
HIP 76892 |
4.14 |
| 2026-05-17 00:00 |
15:41:34.60 |
+00:31:45.9 |
HIP 76892 |
7.98 |
| 2026-05-17 12:00 |
15:41:14.78 |
+00:32:19.5 |
HIP 76892 |
12.64 |
| 2026-05-18 00:00 |
15:40:54.99 |
+00:32:51.4 |
HIP 76892 |
17.47 |
| 2026-05-18 12:00 |
15:40:35.22 |
+00:33:21.7 |
HIP 76892 |
22.35 |
| 2026-05-19 00:00 |
15:40:15.48 |
+00:33:50.4 |
HIP 76892 |
27.24 |
| 2026-05-19 12:00 |
15:39:55.78 |
+00:34:17.3 |
HIP 76892 |
32.14 |
| 2026-05-20 00:00 |
15:39:36.11 |
+00:34:42.7 |
HIP 76547 |
28.58 |
| 2026-05-20 12:00 |
15:39:16.49 |
+00:35:06.3 |
HIP 76547 |
24.86 |
| 2026-05-21 00:00 |
15:38:56.91 |
+00:35:28.3 |
HIP 76547 |
21.61 |
| 2026-05-21 12:00 |
15:38:37.38 |
+00:35:48.6 |
HIP 76547 |
19.06 |
| 2026-05-22 00:00 |
15:38:17.91 |
+00:36:07.3 |
HIP 76547 |
17.52 |
| 2026-05-22 12:00 |
15:37:58.49 |
+00:36:24.2 |
HIP 76547 |
17.24 |
| 2026-05-23 00:00 |
15:37:39.14 |
+00:36:39.5 |
HIP 76547 |
18.26 |
| 2026-05-23 12:00 |
15:37:19.85 |
+00:36:53.1 |
HIP 76547 |
20.38 |
| 2026-05-24 00:00 |
15:37:00.62 |
+00:37:05.0 |
HIP 76547 |
23.29 |
| 2026-05-24 12:00 |
15:36:41.47 |
+00:37:15.2 |
HIP 76439 |
23.08 |
| 2026-05-25 00:00 |
15:36:22.39 |
+00:37:23.8 |
HIP 76296 |
19.92 |
| 2026-05-25 12:00 |
15:36:03.39 |
+00:37:30.6 |
HIP 76296 |
15.55 |
| 2026-05-26 00:00 |
15:35:44.47 |
+00:37:35.8 |
HIP 76296 |
11.53 |
| 2026-05-26 12:00 |
15:35:25.64 |
+00:37:39.3 |
HIP 76296 |
8.32 |
| 2026-05-27 00:00 |
15:35:06.89 |
+00:37:41.1 |
HIP 76296 |
7.10 |
| 2026-05-27 12:00 |
15:34:48.24 |
+00:37:41.2 |
HIP 76296 |
8.69 |
| 2026-05-28 00:00 |
15:34:29.67 |
+00:37:39.7 |
HIP 76296 |
12.01 |
| 2026-05-28 12:00 |
15:34:11.21 |
+00:37:36.4 |
HIP 76296 |
15.99 |
| 2026-05-29 00:00 |
15:33:52.84 |
+00:37:31.5 |
HIP 76296 |
20.23 |
| 2026-05-29 12:00 |
15:33:34.58 |
+00:37:24.9 |
HIP 76296 |
24.57 |
| 2026-05-30 00:00 |
15:33:16.42 |
+00:37:16.6 |
HIP 76031 |
28.19 |
| 2026-05-30 12:00 |
15:32:58.38 |
+00:37:06.7 |
HIP 76031 |
24.68 |
| 2026-05-31 00:00 |
15:32:40.44 |
+00:36:55.0 |
HIP 76031 |
21.60 |
| 2026-05-31 12:00 |
15:32:22.62 |
+00:36:41.7 |
HIP 76031 |
19.11 |
| 2026-06-01 00:00 |
15:32:04.91 |
+00:36:26.8 |
HIP 76031 |
17.47 |
| 2026-06-01 12:00 |
15:31:47.33 |
+00:36:10.1 |
HIP 76031 |
16.89 |
| 2026-06-02 00:00 |
15:31:29.87 |
+00:35:51.9 |
HIP 75999 |
15.83 |