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) |
| 2026-09-20 00:00 |
07:13:36.05 |
-02:37:46.9 |
HIP 34837 |
15.96 |
| 2026-09-20 12:00 |
07:13:36.54 |
-02:37:56.0 |
HIP 34837 |
16.12 |
| 2026-09-21 00:00 |
07:13:37.01 |
-02:38:05.2 |
HIP 34837 |
16.27 |
| 2026-09-21 12:00 |
07:13:37.48 |
-02:38:14.3 |
HIP 34837 |
16.43 |
| 2026-09-22 00:00 |
07:13:37.93 |
-02:38:23.4 |
HIP 34837 |
16.58 |
| 2026-09-22 12:00 |
07:13:38.37 |
-02:38:32.6 |
HIP 34837 |
16.73 |
| 2026-09-23 00:00 |
07:13:38.80 |
-02:38:41.7 |
HIP 34837 |
16.88 |
| 2026-09-23 12:00 |
07:13:39.22 |
-02:38:50.9 |
HIP 34837 |
17.02 |
| 2026-09-24 00:00 |
07:13:39.63 |
-02:39:00.0 |
HIP 34837 |
17.17 |
| 2026-09-24 12:00 |
07:13:40.03 |
-02:39:09.2 |
HIP 34837 |
17.31 |
| 2026-09-25 00:00 |
07:13:40.42 |
-02:39:18.3 |
HIP 34837 |
17.45 |
| 2026-09-25 12:00 |
07:13:40.79 |
-02:39:27.5 |
HIP 34837 |
17.59 |
| 2026-09-26 00:00 |
07:13:41.15 |
-02:39:36.7 |
HIP 34837 |
17.73 |
| 2026-09-26 12:00 |
07:13:41.51 |
-02:39:45.8 |
HIP 34837 |
17.86 |
| 2026-09-27 00:00 |
07:13:41.84 |
-02:39:55.0 |
HIP 34837 |
17.99 |
| 2026-09-27 12:00 |
07:13:42.17 |
-02:40:04.2 |
HIP 34837 |
18.12 |
| 2026-09-28 00:00 |
07:13:42.49 |
-02:40:13.3 |
HIP 34837 |
18.25 |
| 2026-09-28 12:00 |
07:13:42.80 |
-02:40:22.5 |
HIP 34837 |
18.38 |
| 2026-09-29 00:00 |
07:13:43.09 |
-02:40:31.6 |
HIP 34837 |
18.50 |
| 2026-09-29 12:00 |
07:13:43.37 |
-02:40:40.8 |
HIP 34837 |
18.63 |
| 2026-09-30 00:00 |
07:13:43.64 |
-02:40:49.9 |
HIP 34837 |
18.75 |
| 2026-09-30 12:00 |
07:13:43.90 |
-02:40:59.1 |
HIP 34837 |
18.87 |
| 2026-10-01 00:00 |
07:13:44.15 |
-02:41:08.2 |
HIP 34837 |
18.98 |
| 2026-10-01 12:00 |
07:13:44.38 |
-02:41:17.4 |
HIP 34837 |
19.10 |
| 2026-10-02 00:00 |
07:13:44.61 |
-02:41:26.5 |
HIP 34837 |
19.21 |
| 2026-10-02 12:00 |
07:13:44.82 |
-02:41:35.6 |
HIP 34837 |
19.32 |
| 2026-10-03 00:00 |
07:13:45.02 |
-02:41:44.7 |
HIP 34837 |
19.43 |
| 2026-10-03 12:00 |
07:13:45.20 |
-02:41:53.8 |
HIP 34837 |
19.54 |
| 2026-10-04 00:00 |
07:13:45.38 |
-02:42:02.9 |
HIP 34837 |
19.64 |
| 2026-10-04 12:00 |
07:13:45.54 |
-02:42:12.0 |
HIP 34837 |
19.74 |
| 2026-10-05 00:00 |
07:13:45.70 |
-02:42:21.1 |
HIP 34837 |
19.84 |
| 2026-10-05 12:00 |
07:13:45.84 |
-02:42:30.1 |
HIP 35060 |
19.91 |
| 2026-10-06 00:00 |
07:13:45.96 |
-02:42:39.2 |
HIP 35060 |
19.83 |
| 2026-10-06 12:00 |
07:13:46.08 |
-02:42:48.2 |
HIP 35060 |
19.75 |
| 2026-10-07 00:00 |
07:13:46.18 |
-02:42:57.3 |
HIP 35060 |
19.68 |
| 2026-10-07 12:00 |
07:13:46.27 |
-02:43:06.3 |
HIP 35060 |
19.61 |
| 2026-10-08 00:00 |
07:13:46.35 |
-02:43:15.3 |
HIP 35060 |
19.54 |
| 2026-10-08 12:00 |
07:13:46.42 |
-02:43:24.3 |
HIP 35060 |
19.48 |
| 2026-10-09 00:00 |
07:13:46.48 |
-02:43:33.2 |
HIP 35060 |
19.42 |
| 2026-10-09 12:00 |
07:13:46.52 |
-02:43:42.2 |
HIP 35060 |
19.37 |
| 2026-10-10 00:00 |
07:13:46.55 |
-02:43:51.1 |
HIP 35060 |
19.32 |
| 2026-10-10 12:00 |
07:13:46.57 |
-02:44:00.0 |
HIP 35060 |
19.27 |
| 2026-10-11 00:00 |
07:13:46.58 |
-02:44:08.9 |
HIP 35060 |
19.23 |