메타데이터
| 항목 |
값 |
| Designation |
C/1963 R1 (Pereyra) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1963-08-23T23:19:43.055040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:17Z |
| Obs used |
12 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1963-10-25.0000000 |
| e |
0.99994492 |
| q (au) |
0.005021 |
| a (au) |
91.149463 |
| i (deg) |
144.594816 |
| Ω (om, deg) |
8.051859 |
| ω (w, deg) |
86.230920 |
| M (ma, deg) |
0.070252 |
밝기
산란 + 전체 선형
$$
M_a = (4.625 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
4.625 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-03-26 00:00 |
06:41:49.83 |
-12:22:23.7 |
HIP 31976 |
17.20 |
| 2026-03-26 12:00 |
06:41:49.69 |
-12:22:10.5 |
HIP 31976 |
17.03 |
| 2026-03-27 00:00 |
06:41:49.56 |
-12:21:57.3 |
HIP 31976 |
16.86 |
| 2026-03-27 12:00 |
06:41:49.44 |
-12:21:44.1 |
HIP 31976 |
16.70 |
| 2026-03-28 00:00 |
06:41:49.34 |
-12:21:31.0 |
HIP 31976 |
16.54 |
| 2026-03-28 12:00 |
06:41:49.25 |
-12:21:17.8 |
HIP 31976 |
16.38 |
| 2026-03-29 00:00 |
06:41:49.18 |
-12:21:04.7 |
HIP 31976 |
16.23 |
| 2026-03-29 12:00 |
06:41:49.12 |
-12:20:51.6 |
HIP 31976 |
16.08 |
| 2026-03-30 00:00 |
06:41:49.07 |
-12:20:38.5 |
HIP 31976 |
15.94 |
| 2026-03-30 12:00 |
06:41:49.03 |
-12:20:25.4 |
HIP 31976 |
15.80 |
| 2026-03-31 00:00 |
06:41:49.01 |
-12:20:12.3 |
HIP 31976 |
15.67 |
| 2026-03-31 12:00 |
06:41:49.00 |
-12:19:59.2 |
HIP 31976 |
15.54 |
| 2026-04-01 00:00 |
06:41:49.00 |
-12:19:46.1 |
HIP 31976 |
15.41 |
| 2026-04-01 12:00 |
06:41:49.02 |
-12:19:33.1 |
HIP 31976 |
15.29 |
| 2026-04-02 00:00 |
06:41:49.05 |
-12:19:20.1 |
HIP 31976 |
15.18 |
| 2026-04-02 12:00 |
06:41:49.09 |
-12:19:07.1 |
HIP 31976 |
15.07 |
| 2026-04-03 00:00 |
06:41:49.15 |
-12:18:54.1 |
HIP 31976 |
14.96 |
| 2026-04-03 12:00 |
06:41:49.22 |
-12:18:41.1 |
HIP 31976 |
14.86 |
| 2026-04-04 00:00 |
06:41:49.30 |
-12:18:28.2 |
HIP 31976 |
14.77 |
| 2026-04-04 12:00 |
06:41:49.40 |
-12:18:15.3 |
HIP 31976 |
14.68 |
| 2026-04-05 00:00 |
06:41:49.51 |
-12:18:02.4 |
HIP 31976 |
14.60 |
| 2026-04-05 12:00 |
06:41:49.63 |
-12:17:49.5 |
HIP 31976 |
14.52 |
| 2026-04-06 00:00 |
06:41:49.76 |
-12:17:36.7 |
HIP 31976 |
14.45 |
| 2026-04-06 12:00 |
06:41:49.91 |
-12:17:23.8 |
HIP 31976 |
14.38 |
| 2026-04-07 00:00 |
06:41:50.07 |
-12:17:11.0 |
HIP 31976 |
14.33 |
| 2026-04-07 12:00 |
06:41:50.24 |
-12:16:58.3 |
HIP 31976 |
14.27 |
| 2026-04-08 00:00 |
06:41:50.43 |
-12:16:45.5 |
HIP 31976 |
14.23 |
| 2026-04-08 12:00 |
06:41:50.63 |
-12:16:32.8 |
HIP 31976 |
14.18 |
| 2026-04-09 00:00 |
06:41:50.84 |
-12:16:20.1 |
HIP 31976 |
14.15 |
| 2026-04-09 12:00 |
06:41:51.07 |
-12:16:07.5 |
HIP 31976 |
14.12 |
| 2026-04-10 00:00 |
06:41:51.30 |
-12:15:54.9 |
HIP 31976 |
14.10 |
| 2026-04-10 12:00 |
06:41:51.56 |
-12:15:42.3 |
HIP 31976 |
14.09 |
| 2026-04-11 00:00 |
06:41:51.82 |
-12:15:29.7 |
HIP 31976 |
14.08 |
| 2026-04-11 12:00 |
06:41:52.10 |
-12:15:17.2 |
HIP 31976 |
14.08 |
| 2026-04-12 00:00 |
06:41:52.39 |
-12:15:04.7 |
HIP 31976 |
14.08 |
| 2026-04-12 12:00 |
06:41:52.69 |
-12:14:52.3 |
HIP 31976 |
14.09 |
| 2026-04-13 00:00 |
06:41:53.00 |
-12:14:39.9 |
HIP 31976 |
14.11 |
| 2026-04-13 12:00 |
06:41:53.33 |
-12:14:27.5 |
HIP 31976 |
14.13 |
| 2026-04-14 00:00 |
06:41:53.67 |
-12:14:15.2 |
HIP 31976 |
14.17 |
| 2026-04-14 12:00 |
06:41:54.02 |
-12:14:02.9 |
HIP 31976 |
14.20 |
| 2026-04-15 00:00 |
06:41:54.39 |
-12:13:50.6 |
HIP 31976 |
14.25 |
| 2026-04-15 12:00 |
06:41:54.77 |
-12:13:38.4 |
HIP 31976 |
14.30 |
| 2026-04-16 00:00 |
06:41:55.16 |
-12:13:26.2 |
HIP 31976 |
14.36 |