메타데이터
| 항목 |
값 |
| Designation |
C/1966 P2 (Barbon) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1966-04-17T18:42:45.604800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:17Z |
| Obs used |
90 |
| NEO |
- |
| M1 |
5.600 |
| K1 |
11.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1966-09-13.0000000 |
| e |
0.99811001 |
| q (au) |
2.018741 |
| a (au) |
1068.123028 |
| i (deg) |
28.707616 |
| Ω (om, deg) |
167.689319 |
| ω (w, deg) |
136.165961 |
| M (ma, deg) |
0.004185 |
밝기
산란 + 전체 선형
$$
M_a = (4.144 + 4.695\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
4.144 |
| n |
4.695 |
| gf |
0.997 |
| gb |
-0.729 |
| k |
1.000 |
| δ90 |
9.999 |
| 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) |
| 2026-06-01 00:00 |
07:09:17.28 |
-02:22:45.3 |
HIP 34494 |
20.54 |
| 2026-06-01 12:00 |
07:09:18.43 |
-02:22:41.9 |
HIP 34494 |
20.68 |
| 2026-06-02 00:00 |
07:09:19.58 |
-02:22:38.6 |
HIP 34494 |
20.83 |
| 2026-06-02 12:00 |
07:09:20.75 |
-02:22:35.3 |
HIP 34494 |
20.98 |
| 2026-06-03 00:00 |
07:09:21.91 |
-02:22:32.1 |
HIP 34494 |
21.14 |
| 2026-06-03 12:00 |
07:09:23.09 |
-02:22:29.0 |
HIP 34494 |
21.30 |
| 2026-06-04 00:00 |
07:09:24.27 |
-02:22:26.0 |
HIP 34494 |
21.46 |
| 2026-06-04 12:00 |
07:09:25.46 |
-02:22:23.0 |
HIP 34494 |
21.62 |
| 2026-06-05 00:00 |
07:09:26.65 |
-02:22:20.2 |
HIP 34494 |
21.78 |
| 2026-06-05 12:00 |
07:09:27.85 |
-02:22:17.3 |
HIP 34494 |
21.95 |
| 2026-06-06 00:00 |
07:09:29.06 |
-02:22:14.6 |
HIP 34494 |
22.12 |
| 2026-06-06 12:00 |
07:09:30.27 |
-02:22:11.9 |
HIP 34494 |
22.29 |
| 2026-06-07 00:00 |
07:09:31.49 |
-02:22:09.3 |
HIP 34494 |
22.46 |
| 2026-06-07 12:00 |
07:09:32.71 |
-02:22:06.8 |
HIP 34494 |
22.64 |
| 2026-06-08 00:00 |
07:09:33.94 |
-02:22:04.4 |
HIP 34494 |
22.82 |
| 2026-06-08 12:00 |
07:09:35.18 |
-02:22:02.0 |
HIP 34494 |
23.00 |
| 2026-06-09 00:00 |
07:09:36.42 |
-02:21:59.7 |
HIP 34494 |
23.18 |
| 2026-06-09 12:00 |
07:09:37.66 |
-02:21:57.5 |
HIP 34494 |
23.37 |
| 2026-06-10 00:00 |
07:09:38.91 |
-02:21:55.3 |
HIP 34494 |
23.56 |
| 2026-06-10 12:00 |
07:09:40.17 |
-02:21:53.3 |
HIP 34494 |
23.75 |
| 2026-06-11 00:00 |
07:09:41.43 |
-02:21:51.3 |
HIP 34494 |
23.94 |
| 2026-06-11 12:00 |
07:09:42.70 |
-02:21:49.3 |
HIP 34494 |
24.14 |
| 2026-06-12 00:00 |
07:09:43.97 |
-02:21:47.5 |
HIP 34494 |
24.33 |
| 2026-06-12 12:00 |
07:09:45.25 |
-02:21:45.7 |
HIP 34494 |
24.53 |
| 2026-06-13 00:00 |
07:09:46.53 |
-02:21:44.0 |
HIP 34494 |
24.73 |
| 2026-06-13 12:00 |
07:09:47.81 |
-02:21:42.4 |
HIP 34494 |
24.94 |
| 2026-06-14 00:00 |
07:09:49.11 |
-02:21:40.8 |
HIP 34494 |
25.14 |
| 2026-06-14 12:00 |
07:09:50.40 |
-02:21:39.4 |
HIP 34494 |
25.35 |
| 2026-06-15 00:00 |
07:09:51.70 |
-02:21:38.0 |
HIP 34494 |
25.56 |
| 2026-06-15 12:00 |
07:09:53.00 |
-02:21:36.6 |
HIP 34494 |
25.77 |
| 2026-06-16 00:00 |
07:09:54.31 |
-02:21:35.4 |
HIP 34494 |
25.99 |
| 2026-06-16 12:00 |
07:09:55.62 |
-02:21:34.2 |
HIP 34494 |
26.20 |
| 2026-06-17 00:00 |
07:09:56.94 |
-02:21:33.1 |
HIP 34494 |
26.42 |
| 2026-06-17 12:00 |
07:09:58.26 |
-02:21:32.1 |
HIP 34494 |
26.64 |
| 2026-06-18 00:00 |
07:09:59.59 |
-02:21:31.2 |
HIP 34494 |
26.86 |
| 2026-06-18 12:00 |
07:10:00.91 |
-02:21:30.3 |
HIP 34494 |
27.09 |
| 2026-06-19 00:00 |
07:10:02.25 |
-02:21:29.5 |
HIP 34494 |
27.31 |
| 2026-06-19 12:00 |
07:10:03.58 |
-02:21:28.8 |
HIP 34494 |
27.54 |
| 2026-06-20 00:00 |
07:10:04.92 |
-02:21:28.2 |
HIP 34494 |
27.77 |
| 2026-06-20 12:00 |
07:10:06.26 |
-02:21:27.6 |
HIP 34494 |
28.00 |
| 2026-06-21 00:00 |
07:10:07.61 |
-02:21:27.2 |
HIP 34494 |
28.23 |
| 2026-06-21 12:00 |
07:10:08.95 |
-02:21:26.8 |
HIP 34494 |
28.47 |
| 2026-06-22 00:00 |
07:10:10.31 |
-02:21:26.4 |
HIP 34494 |
28.70 |