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) |
| 2026-09-20 00:00 |
14:23:50.54 |
-28:46:14.3 |
HIP 70471 |
15.72 |
| 2026-09-20 12:00 |
14:23:51.95 |
-28:46:15.4 |
HIP 70471 |
15.46 |
| 2026-09-21 00:00 |
14:23:53.38 |
-28:46:16.6 |
HIP 70471 |
15.19 |
| 2026-09-21 12:00 |
14:23:54.82 |
-28:46:17.8 |
HIP 70471 |
14.93 |
| 2026-09-22 00:00 |
14:23:56.26 |
-28:46:19.2 |
HIP 70471 |
14.66 |
| 2026-09-22 12:00 |
14:23:57.72 |
-28:46:20.6 |
HIP 70471 |
14.40 |
| 2026-09-23 00:00 |
14:23:59.19 |
-28:46:22.1 |
HIP 70471 |
14.13 |
| 2026-09-23 12:00 |
14:24:00.66 |
-28:46:23.7 |
HIP 70471 |
13.87 |
| 2026-09-24 00:00 |
14:24:02.15 |
-28:46:25.4 |
HIP 70471 |
13.60 |
| 2026-09-24 12:00 |
14:24:03.65 |
-28:46:27.2 |
HIP 70471 |
13.34 |
| 2026-09-25 00:00 |
14:24:05.15 |
-28:46:29.0 |
HIP 70471 |
13.07 |
| 2026-09-25 12:00 |
14:24:06.67 |
-28:46:31.0 |
HIP 70471 |
12.81 |
| 2026-09-26 00:00 |
14:24:08.19 |
-28:46:33.0 |
HIP 70471 |
12.54 |
| 2026-09-26 12:00 |
14:24:09.72 |
-28:46:35.1 |
HIP 70471 |
12.28 |
| 2026-09-27 00:00 |
14:24:11.27 |
-28:46:37.3 |
HIP 70471 |
12.02 |
| 2026-09-27 12:00 |
14:24:12.82 |
-28:46:39.6 |
HIP 70471 |
11.76 |
| 2026-09-28 00:00 |
14:24:14.38 |
-28:46:42.0 |
HIP 70471 |
11.50 |
| 2026-09-28 12:00 |
14:24:15.95 |
-28:46:44.4 |
HIP 70471 |
11.24 |
| 2026-09-29 00:00 |
14:24:17.53 |
-28:46:47.0 |
HIP 70471 |
10.99 |
| 2026-09-29 12:00 |
14:24:19.11 |
-28:46:49.6 |
HIP 70471 |
10.74 |
| 2026-09-30 00:00 |
14:24:20.71 |
-28:46:52.3 |
HIP 70471 |
10.49 |
| 2026-09-30 12:00 |
14:24:22.31 |
-28:46:55.1 |
HIP 70471 |
10.25 |
| 2026-10-01 00:00 |
14:24:23.92 |
-28:46:57.9 |
HIP 70471 |
10.01 |
| 2026-10-01 12:00 |
14:24:25.54 |
-28:47:00.9 |
HIP 70471 |
9.78 |
| 2026-10-02 00:00 |
14:24:27.17 |
-28:47:03.9 |
HIP 70471 |
9.55 |
| 2026-10-02 12:00 |
14:24:28.81 |
-28:47:07.1 |
HIP 70471 |
9.33 |
| 2026-10-03 00:00 |
14:24:30.45 |
-28:47:10.3 |
HIP 70471 |
9.11 |
| 2026-10-03 12:00 |
14:24:32.10 |
-28:47:13.6 |
HIP 70471 |
8.91 |
| 2026-10-04 00:00 |
14:24:33.76 |
-28:47:16.9 |
HIP 70471 |
8.71 |
| 2026-10-04 12:00 |
14:24:35.43 |
-28:47:20.4 |
HIP 70471 |
8.52 |
| 2026-10-05 00:00 |
14:24:37.10 |
-28:47:23.9 |
HIP 70471 |
8.34 |
| 2026-10-05 12:00 |
14:24:38.78 |
-28:47:27.5 |
HIP 70471 |
8.18 |
| 2026-10-06 00:00 |
14:24:40.47 |
-28:47:31.2 |
HIP 70471 |
8.02 |
| 2026-10-06 12:00 |
14:24:42.17 |
-28:47:35.0 |
HIP 70471 |
7.88 |
| 2026-10-07 00:00 |
14:24:43.87 |
-28:47:38.9 |
HIP 70471 |
7.75 |
| 2026-10-07 12:00 |
14:24:45.58 |
-28:47:42.8 |
HIP 70471 |
7.64 |
| 2026-10-08 00:00 |
14:24:47.30 |
-28:47:46.8 |
HIP 70471 |
7.54 |
| 2026-10-08 12:00 |
14:24:49.02 |
-28:47:50.9 |
HIP 70471 |
7.46 |
| 2026-10-09 00:00 |
14:24:50.75 |
-28:47:55.1 |
HIP 70471 |
7.40 |
| 2026-10-09 12:00 |
14:24:52.49 |
-28:47:59.3 |
HIP 70471 |
7.36 |
| 2026-10-10 00:00 |
14:24:54.23 |
-28:48:03.7 |
HIP 70471 |
7.34 |
| 2026-10-10 12:00 |
14:24:55.98 |
-28:48:08.1 |
HIP 70471 |
7.33 |
| 2026-10-11 00:00 |
14:24:57.73 |
-28:48:12.6 |
HIP 70471 |
7.35 |