메타데이터
| 항목 |
값 |
| Designation |
C/1946 U1 (Bester) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1947-02-07T08:36:00.273600Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:07Z |
| Obs used |
34 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1947-01-12.0000000 |
| e |
1.00061189 |
| q (au) |
2.407675 |
| a (au) |
-3934.834500 |
| i (deg) |
108.175807 |
| Ω (om, deg) |
35.557431 |
| ω (w, deg) |
348.621875 |
| M (ma, deg) |
-0.000105 |
밝기
산란 + 전체 선형
$$
M_a = (1.950 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
1.950 |
| n |
6.000 |
| gf |
0.997 |
| gb |
-0.999 |
| 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) |
| 2026-03-26 00:00 |
15:24:40.40 |
+10:01:45.8 |
HIP 75457 |
16.76 |
| 2026-03-26 12:00 |
15:24:39.63 |
+10:01:54.5 |
HIP 75457 |
16.95 |
| 2026-03-27 00:00 |
15:24:38.85 |
+10:02:03.1 |
HIP 75457 |
17.13 |
| 2026-03-27 12:00 |
15:24:38.06 |
+10:02:11.7 |
HIP 75457 |
17.32 |
| 2026-03-28 00:00 |
15:24:37.26 |
+10:02:20.3 |
HIP 75457 |
17.50 |
| 2026-03-28 12:00 |
15:24:36.45 |
+10:02:28.8 |
HIP 75457 |
17.69 |
| 2026-03-29 00:00 |
15:24:35.64 |
+10:02:37.4 |
HIP 75457 |
17.88 |
| 2026-03-29 12:00 |
15:24:34.82 |
+10:02:45.9 |
HIP 75457 |
18.08 |
| 2026-03-30 00:00 |
15:24:34.00 |
+10:02:54.3 |
HIP 75457 |
18.27 |
| 2026-03-30 12:00 |
15:24:33.16 |
+10:03:02.8 |
HIP 75457 |
18.46 |
| 2026-03-31 00:00 |
15:24:32.32 |
+10:03:11.2 |
HIP 75457 |
18.66 |
| 2026-03-31 12:00 |
15:24:31.48 |
+10:03:19.6 |
HIP 75457 |
18.86 |
| 2026-04-01 00:00 |
15:24:30.62 |
+10:03:27.9 |
HIP 75457 |
19.05 |
| 2026-04-01 12:00 |
15:24:29.76 |
+10:03:36.3 |
HIP 75457 |
19.25 |
| 2026-04-02 00:00 |
15:24:28.90 |
+10:03:44.6 |
HIP 75457 |
19.45 |
| 2026-04-02 12:00 |
15:24:28.02 |
+10:03:52.8 |
HIP 75457 |
19.66 |
| 2026-04-03 00:00 |
15:24:27.14 |
+10:04:01.1 |
HIP 75457 |
19.86 |
| 2026-04-03 12:00 |
15:24:26.25 |
+10:04:09.3 |
HIP 75457 |
20.06 |
| 2026-04-04 00:00 |
15:24:25.36 |
+10:04:17.4 |
HIP 75457 |
20.27 |
| 2026-04-04 12:00 |
15:24:24.46 |
+10:04:25.5 |
HIP 75457 |
20.48 |
| 2026-04-05 00:00 |
15:24:23.56 |
+10:04:33.6 |
HIP 75457 |
20.69 |
| 2026-04-05 12:00 |
15:24:22.64 |
+10:04:41.7 |
HIP 75457 |
20.90 |
| 2026-04-06 00:00 |
15:24:21.72 |
+10:04:49.7 |
HIP 75457 |
21.11 |
| 2026-04-06 12:00 |
15:24:20.80 |
+10:04:57.7 |
HIP 75457 |
21.32 |
| 2026-04-07 00:00 |
15:24:19.87 |
+10:05:05.7 |
HIP 75457 |
21.53 |
| 2026-04-07 12:00 |
15:24:18.93 |
+10:05:13.6 |
HIP 75457 |
21.75 |
| 2026-04-08 00:00 |
15:24:17.99 |
+10:05:21.4 |
HIP 75457 |
21.96 |
| 2026-04-08 12:00 |
15:24:17.04 |
+10:05:29.3 |
HIP 75457 |
22.18 |
| 2026-04-09 00:00 |
15:24:16.09 |
+10:05:37.1 |
HIP 75457 |
22.40 |
| 2026-04-09 12:00 |
15:24:15.12 |
+10:05:44.8 |
HIP 75457 |
22.62 |
| 2026-04-10 00:00 |
15:24:14.16 |
+10:05:52.5 |
HIP 75457 |
22.84 |
| 2026-04-10 12:00 |
15:24:13.19 |
+10:06:00.2 |
HIP 75457 |
23.06 |
| 2026-04-11 00:00 |
15:24:12.21 |
+10:06:07.8 |
HIP 75457 |
23.28 |
| 2026-04-11 12:00 |
15:24:11.23 |
+10:06:15.4 |
HIP 75279 |
23.45 |
| 2026-04-12 00:00 |
15:24:10.24 |
+10:06:23.0 |
HIP 75279 |
23.31 |
| 2026-04-12 12:00 |
15:24:09.25 |
+10:06:30.5 |
HIP 75279 |
23.17 |
| 2026-04-13 00:00 |
15:24:08.25 |
+10:06:37.9 |
HIP 75279 |
23.03 |
| 2026-04-13 12:00 |
15:24:07.24 |
+10:06:45.3 |
HIP 75279 |
22.90 |
| 2026-04-14 00:00 |
15:24:06.24 |
+10:06:52.7 |
HIP 75279 |
22.76 |
| 2026-04-14 12:00 |
15:24:05.22 |
+10:07:00.0 |
HIP 75279 |
22.62 |
| 2026-04-15 00:00 |
15:24:04.20 |
+10:07:07.3 |
HIP 75279 |
22.49 |
| 2026-04-15 12:00 |
15:24:03.18 |
+10:07:14.5 |
HIP 75315 |
22.28 |
| 2026-04-16 00:00 |
15:24:02.15 |
+10:07:21.6 |
HIP 75315 |
22.05 |