메타데이터
| 항목 |
값 |
| Designation |
C/1947 F1 (Rondanina-Bester) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1947-05-20T23:09:22.504320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:07Z |
| Obs used |
15 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1947-04-18.0000000 |
| e |
0.99727691 |
| q (au) |
0.559812 |
| a (au) |
205.579925 |
| i (deg) |
39.291590 |
| Ω (om, deg) |
353.903996 |
| ω (w, deg) |
303.758245 |
| M (ma, deg) |
359.988977 |
밝기
산란 + 전체 선형
$$
M_a = (7.611 + 3.727\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.611 |
| n |
3.727 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.950 |
| δ90 |
1.000 |
| 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) |
| 2026-09-20 00:00 |
08:39:14.15 |
+54:12:03.5 |
HIP 42393 |
29.12 |
| 2026-09-20 12:00 |
08:39:15.42 |
+54:12:09.1 |
HIP 42393 |
29.24 |
| 2026-09-21 00:00 |
08:39:16.69 |
+54:12:14.8 |
HIP 42393 |
29.37 |
| 2026-09-21 12:00 |
08:39:17.94 |
+54:12:20.6 |
HIP 42393 |
29.50 |
| 2026-09-22 00:00 |
08:39:19.17 |
+54:12:26.5 |
HIP 42393 |
29.63 |
| 2026-09-22 12:00 |
08:39:20.40 |
+54:12:32.4 |
HIP 42393 |
29.76 |
| 2026-09-23 00:00 |
08:39:21.61 |
+54:12:38.5 |
HIP 42393 |
29.89 |
| 2026-09-23 12:00 |
08:39:22.81 |
+54:12:44.6 |
HIP 42393 |
30.03 |
| 2026-09-24 00:00 |
08:39:23.99 |
+54:12:50.8 |
HIP 42393 |
30.17 |
| 2026-09-24 12:00 |
08:39:25.17 |
+54:12:57.1 |
HIP 42393 |
30.31 |
| 2026-09-25 00:00 |
08:39:26.32 |
+54:13:03.4 |
HIP 42393 |
30.45 |
| 2026-09-25 12:00 |
08:39:27.47 |
+54:13:09.8 |
HIP 42393 |
30.59 |
| 2026-09-26 00:00 |
08:39:28.60 |
+54:13:16.3 |
HIP 42393 |
30.73 |
| 2026-09-26 12:00 |
08:39:29.72 |
+54:13:22.9 |
HIP 42393 |
30.88 |
| 2026-09-27 00:00 |
08:39:30.82 |
+54:13:29.6 |
HIP 42393 |
31.02 |
| 2026-09-27 12:00 |
08:39:31.91 |
+54:13:36.3 |
HIP 42393 |
31.17 |
| 2026-09-28 00:00 |
08:39:32.99 |
+54:13:43.1 |
HIP 42393 |
31.32 |
| 2026-09-28 12:00 |
08:39:34.05 |
+54:13:50.0 |
HIP 42393 |
31.47 |
| 2026-09-29 00:00 |
08:39:35.10 |
+54:13:57.0 |
HIP 42393 |
31.62 |
| 2026-09-29 12:00 |
08:39:36.13 |
+54:14:04.0 |
HIP 42393 |
31.77 |
| 2026-09-30 00:00 |
08:39:37.15 |
+54:14:11.1 |
HIP 42393 |
31.93 |
| 2026-09-30 12:00 |
08:39:38.15 |
+54:14:18.3 |
HIP 42393 |
32.08 |
| 2026-10-01 00:00 |
08:39:39.15 |
+54:14:25.6 |
HIP 42393 |
32.24 |
| 2026-10-01 12:00 |
08:39:40.12 |
+54:14:32.9 |
HIP 42393 |
32.39 |
| 2026-10-02 00:00 |
08:39:41.08 |
+54:14:40.3 |
HIP 42393 |
32.55 |
| 2026-10-02 12:00 |
08:39:42.03 |
+54:14:47.8 |
HIP 42393 |
32.71 |
| 2026-10-03 00:00 |
08:39:42.96 |
+54:14:55.4 |
HIP 42393 |
32.87 |
| 2026-10-03 12:00 |
08:39:43.88 |
+54:15:03.0 |
HIP 42393 |
33.03 |
| 2026-10-04 00:00 |
08:39:44.78 |
+54:15:10.7 |
HIP 42393 |
33.19 |
| 2026-10-04 12:00 |
08:39:45.67 |
+54:15:18.5 |
HIP 42393 |
33.35 |
| 2026-10-05 00:00 |
08:39:46.54 |
+54:15:26.3 |
HIP 42393 |
33.51 |
| 2026-10-05 12:00 |
08:39:47.40 |
+54:15:34.2 |
HIP 42393 |
33.68 |
| 2026-10-06 00:00 |
08:39:48.24 |
+54:15:42.2 |
HIP 42393 |
33.84 |
| 2026-10-06 12:00 |
08:39:49.07 |
+54:15:50.2 |
HIP 42393 |
34.00 |
| 2026-10-07 00:00 |
08:39:49.88 |
+54:15:58.4 |
HIP 42393 |
34.17 |
| 2026-10-07 12:00 |
08:39:50.68 |
+54:16:06.5 |
HIP 42393 |
34.33 |
| 2026-10-08 00:00 |
08:39:51.46 |
+54:16:14.8 |
HIP 42393 |
34.50 |
| 2026-10-08 12:00 |
08:39:52.22 |
+54:16:23.1 |
HIP 42393 |
34.66 |
| 2026-10-09 00:00 |
08:39:52.97 |
+54:16:31.5 |
HIP 42393 |
34.83 |
| 2026-10-09 12:00 |
08:39:53.70 |
+54:16:39.9 |
HIP 42393 |
35.00 |
| 2026-10-10 00:00 |
08:39:54.42 |
+54:16:48.5 |
HIP 42393 |
35.17 |
| 2026-10-10 12:00 |
08:39:55.12 |
+54:16:57.0 |
HIP 42393 |
35.33 |
| 2026-10-11 00:00 |
08:39:55.80 |
+54:17:05.7 |
HIP 42393 |
35.50 |