메타데이터
| 항목 |
값 |
| Designation |
C/1983 O1 (Cernis) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1983-07-21T04:28:44.451840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:31Z |
| Obs used |
229 |
| NEO |
- |
| M1 |
5.200 |
| K1 |
6.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1984-05-13.0000000 |
| e |
1.00152642 |
| q (au) |
3.317948 |
| a (au) |
-2173.674289 |
| i (deg) |
134.695303 |
| Ω (om, deg) |
209.575905 |
| ω (w, deg) |
186.208578 |
| M (ma, deg) |
0.002887 |
밝기
산란 + 전체 선형
$$
M_a = (1.779 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
1.779 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.659 |
| k |
0.800 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 1983-07-21 |
1988-03-23 |
-2.5184 |
+1.838 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
14:22:35.74 |
-28:52:38.3 |
HIP 70471 |
29.32 |
| 2026-07-29 12:00 |
14:22:35.65 |
-28:52:30.4 |
HIP 70471 |
29.36 |
| 2026-07-30 00:00 |
14:22:35.57 |
-28:52:22.5 |
HIP 70471 |
29.39 |
| 2026-07-30 12:00 |
14:22:35.51 |
-28:52:14.8 |
HIP 70471 |
29.41 |
| 2026-07-31 00:00 |
14:22:35.47 |
-28:52:07.1 |
HIP 70471 |
29.44 |
| 2026-07-31 12:00 |
14:22:35.44 |
-28:51:59.4 |
HIP 70471 |
29.46 |
| 2026-08-01 00:00 |
14:22:35.43 |
-28:51:51.9 |
HIP 70471 |
29.47 |
| 2026-08-01 12:00 |
14:22:35.43 |
-28:51:44.4 |
HIP 70471 |
29.49 |
| 2026-08-02 00:00 |
14:22:35.45 |
-28:51:37.0 |
HIP 70471 |
29.50 |
| 2026-08-02 12:00 |
14:22:35.49 |
-28:51:29.6 |
HIP 70471 |
29.51 |
| 2026-08-03 00:00 |
14:22:35.54 |
-28:51:22.3 |
HIP 70471 |
29.51 |
| 2026-08-03 12:00 |
14:22:35.61 |
-28:51:15.1 |
HIP 70471 |
29.51 |
| 2026-08-04 00:00 |
14:22:35.69 |
-28:51:08.0 |
HIP 70471 |
29.51 |
| 2026-08-04 12:00 |
14:22:35.80 |
-28:51:01.0 |
HIP 70471 |
29.51 |
| 2026-08-05 00:00 |
14:22:35.91 |
-28:50:54.0 |
HIP 70471 |
29.50 |
| 2026-08-05 12:00 |
14:22:36.04 |
-28:50:47.1 |
HIP 70471 |
29.49 |
| 2026-08-06 00:00 |
14:22:36.19 |
-28:50:40.3 |
HIP 70471 |
29.47 |
| 2026-08-06 12:00 |
14:22:36.36 |
-28:50:33.6 |
HIP 70471 |
29.46 |
| 2026-08-07 00:00 |
14:22:36.54 |
-28:50:26.9 |
HIP 70471 |
29.44 |
| 2026-08-07 12:00 |
14:22:36.74 |
-28:50:20.3 |
HIP 70471 |
29.41 |
| 2026-08-08 00:00 |
14:22:36.95 |
-28:50:13.8 |
HIP 70471 |
29.39 |
| 2026-08-08 12:00 |
14:22:37.18 |
-28:50:07.4 |
HIP 70471 |
29.35 |
| 2026-08-09 00:00 |
14:22:37.42 |
-28:50:01.0 |
HIP 70471 |
29.32 |
| 2026-08-09 12:00 |
14:22:37.69 |
-28:49:54.8 |
HIP 70471 |
29.28 |
| 2026-08-10 00:00 |
14:22:37.96 |
-28:49:48.6 |
HIP 70471 |
29.24 |
| 2026-08-10 12:00 |
14:22:38.26 |
-28:49:42.5 |
HIP 70471 |
29.20 |
| 2026-08-11 00:00 |
14:22:38.56 |
-28:49:36.4 |
HIP 70471 |
29.15 |
| 2026-08-11 12:00 |
14:22:38.89 |
-28:49:30.5 |
HIP 70471 |
29.10 |
| 2026-08-12 00:00 |
14:22:39.23 |
-28:49:24.6 |
HIP 70471 |
29.05 |
| 2026-08-12 12:00 |
14:22:39.59 |
-28:49:18.8 |
HIP 70471 |
28.99 |
| 2026-08-13 00:00 |
14:22:39.96 |
-28:49:13.1 |
HIP 70471 |
28.93 |
| 2026-08-13 12:00 |
14:22:40.35 |
-28:49:07.5 |
HIP 70471 |
28.87 |
| 2026-08-14 00:00 |
14:22:40.75 |
-28:49:02.0 |
HIP 70471 |
28.81 |
| 2026-08-14 12:00 |
14:22:41.17 |
-28:48:56.5 |
HIP 70471 |
28.74 |
| 2026-08-15 00:00 |
14:22:41.61 |
-28:48:51.1 |
HIP 70471 |
28.66 |
| 2026-08-15 12:00 |
14:22:42.06 |
-28:48:45.9 |
HIP 70471 |
28.59 |
| 2026-08-16 00:00 |
14:22:42.53 |
-28:48:40.7 |
HIP 70471 |
28.51 |
| 2026-08-16 12:00 |
14:22:43.01 |
-28:48:35.5 |
HIP 70471 |
28.43 |
| 2026-08-17 00:00 |
14:22:43.51 |
-28:48:30.5 |
HIP 70471 |
28.34 |
| 2026-08-17 12:00 |
14:22:44.02 |
-28:48:25.6 |
HIP 70471 |
28.25 |
| 2026-08-18 00:00 |
14:22:44.55 |
-28:48:20.7 |
HIP 70471 |
28.16 |
| 2026-08-18 12:00 |
14:22:45.09 |
-28:48:15.9 |
HIP 70471 |
28.06 |
| 2026-08-19 00:00 |
14:22:45.65 |
-28:48:11.2 |
HIP 70471 |
27.96 |