메타데이터
| 항목 |
값 |
| Designation |
C/1980 O1 (Cernis-Petrauskas) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1980-06-22T10:43:23.995200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:29Z |
| Obs used |
20 |
| NEO |
- |
| M1 |
9.700 |
| K1 |
8.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1980-08-29.0000000 |
| e |
1.00000000 |
| q (au) |
0.522897 |
| a (au) |
- |
| i (deg) |
49.068235 |
| Ω (om, deg) |
160.632533 |
| ω (w, deg) |
337.783670 |
| M (ma, deg) |
- |
밝기
산란 + 전체 선형
$$
M_a = (7.470 + 3.779\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.470 |
| n |
3.779 |
| gf |
0.800 |
| gb |
-0.501 |
| k |
1.000 |
| 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 |
20:55:06.87 |
+07:34:09.3 |
HIP 103309 |
11.54 |
| 2026-07-29 12:00 |
20:55:05.30 |
+07:34:03.9 |
HIP 103309 |
11.93 |
| 2026-07-30 00:00 |
20:55:03.72 |
+07:33:58.4 |
HIP 103309 |
12.31 |
| 2026-07-30 12:00 |
20:55:02.14 |
+07:33:52.8 |
HIP 103309 |
12.70 |
| 2026-07-31 00:00 |
20:55:00.57 |
+07:33:47.1 |
HIP 103309 |
13.09 |
| 2026-07-31 12:00 |
20:54:58.99 |
+07:33:41.3 |
HIP 103309 |
13.48 |
| 2026-08-01 00:00 |
20:54:57.41 |
+07:33:35.4 |
HIP 103309 |
13.87 |
| 2026-08-01 12:00 |
20:54:55.83 |
+07:33:29.5 |
HIP 103309 |
14.27 |
| 2026-08-02 00:00 |
20:54:54.24 |
+07:33:23.4 |
HIP 103309 |
14.66 |
| 2026-08-02 12:00 |
20:54:52.66 |
+07:33:17.3 |
HIP 103309 |
15.06 |
| 2026-08-03 00:00 |
20:54:51.08 |
+07:33:11.1 |
HIP 103309 |
15.45 |
| 2026-08-03 12:00 |
20:54:49.50 |
+07:33:04.7 |
HIP 103309 |
15.85 |
| 2026-08-04 00:00 |
20:54:47.91 |
+07:32:58.3 |
HIP 103309 |
16.25 |
| 2026-08-04 12:00 |
20:54:46.33 |
+07:32:51.8 |
HIP 103309 |
16.65 |
| 2026-08-05 00:00 |
20:54:44.75 |
+07:32:45.3 |
HIP 103309 |
17.06 |
| 2026-08-05 12:00 |
20:54:43.17 |
+07:32:38.6 |
HIP 103309 |
17.46 |
| 2026-08-06 00:00 |
20:54:41.59 |
+07:32:31.8 |
HIP 103309 |
17.86 |
| 2026-08-06 12:00 |
20:54:40.00 |
+07:32:25.0 |
HIP 103309 |
18.26 |
| 2026-08-07 00:00 |
20:54:38.42 |
+07:32:18.0 |
HIP 103309 |
18.67 |
| 2026-08-07 12:00 |
20:54:36.84 |
+07:32:11.0 |
HIP 103309 |
19.07 |
| 2026-08-08 00:00 |
20:54:35.26 |
+07:32:03.9 |
HIP 103309 |
19.48 |
| 2026-08-08 12:00 |
20:54:33.68 |
+07:31:56.7 |
HIP 103309 |
19.89 |
| 2026-08-09 00:00 |
20:54:32.11 |
+07:31:49.4 |
HIP 103309 |
20.29 |
| 2026-08-09 12:00 |
20:54:30.53 |
+07:31:42.0 |
HIP 103309 |
20.70 |
| 2026-08-10 00:00 |
20:54:28.96 |
+07:31:34.6 |
HIP 103309 |
21.11 |
| 2026-08-10 12:00 |
20:54:27.38 |
+07:31:27.1 |
HIP 103309 |
21.52 |
| 2026-08-11 00:00 |
20:54:25.81 |
+07:31:19.4 |
HIP 103309 |
21.92 |
| 2026-08-11 12:00 |
20:54:24.24 |
+07:31:11.7 |
HIP 103309 |
22.33 |
| 2026-08-12 00:00 |
20:54:22.67 |
+07:31:03.9 |
HIP 103309 |
22.74 |
| 2026-08-12 12:00 |
20:54:21.10 |
+07:30:56.1 |
HIP 103309 |
23.15 |
| 2026-08-13 00:00 |
20:54:19.54 |
+07:30:48.1 |
HIP 103309 |
23.56 |
| 2026-08-13 12:00 |
20:54:17.98 |
+07:30:40.1 |
HIP 103309 |
23.97 |
| 2026-08-14 00:00 |
20:54:16.42 |
+07:30:32.0 |
HIP 103309 |
24.38 |
| 2026-08-14 12:00 |
20:54:14.86 |
+07:30:23.8 |
HIP 103309 |
24.78 |
| 2026-08-15 00:00 |
20:54:13.31 |
+07:30:15.6 |
HIP 103160 |
24.84 |
| 2026-08-15 12:00 |
20:54:11.75 |
+07:30:07.2 |
HIP 103160 |
24.66 |
| 2026-08-16 00:00 |
20:54:10.20 |
+07:29:58.8 |
HIP 103160 |
24.48 |
| 2026-08-16 12:00 |
20:54:08.66 |
+07:29:50.3 |
HIP 103160 |
24.31 |
| 2026-08-17 00:00 |
20:54:07.11 |
+07:29:41.7 |
HIP 103160 |
24.15 |
| 2026-08-17 12:00 |
20:54:05.57 |
+07:29:33.1 |
HIP 103160 |
23.99 |
| 2026-08-18 00:00 |
20:54:04.04 |
+07:29:24.4 |
HIP 103160 |
23.83 |
| 2026-08-18 12:00 |
20:54:02.50 |
+07:29:15.6 |
HIP 103160 |
23.68 |
| 2026-08-19 00:00 |
20:54:00.97 |
+07:29:06.7 |
HIP 103160 |
23.54 |