메타데이터
| 항목 |
값 |
| Designation |
C/1947 S1 (Bester) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1948-02-16T10:08:20.811840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:07Z |
| Obs used |
42 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1948-01-07.0000000 |
| e |
1.00034321 |
| q (au) |
0.748130 |
| a (au) |
-2179.799629 |
| i (deg) |
140.568676 |
| Ω (om, deg) |
271.438753 |
| ω (w, deg) |
350.213543 |
| M (ma, deg) |
-0.000391 |
밝기
산란 + 전체 선형
$$
M_a = (6.180 + 3.781\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.180 |
| n |
3.781 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.952 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 1947-10-05 |
1948-01-12 |
+0.4348 |
-0.045 |
| 1948-02-28 |
1948-05-08 |
-2.2957 |
+0.187 |
| 1948-05-08 |
1949-02-06 |
+6.1259 |
-2.020 |
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 |
07:23:24.44 |
+34:28:22.4 |
HIP 35932 |
18.95 |
| 2026-09-20 12:00 |
07:23:24.92 |
+34:28:24.9 |
HIP 35932 |
18.92 |
| 2026-09-21 00:00 |
07:23:25.39 |
+34:28:27.4 |
HIP 35932 |
18.88 |
| 2026-09-21 12:00 |
07:23:25.86 |
+34:28:29.9 |
HIP 35932 |
18.85 |
| 2026-09-22 00:00 |
07:23:26.31 |
+34:28:32.4 |
HIP 35932 |
18.83 |
| 2026-09-22 12:00 |
07:23:26.75 |
+34:28:35.0 |
HIP 35932 |
18.80 |
| 2026-09-23 00:00 |
07:23:27.18 |
+34:28:37.7 |
HIP 35932 |
18.78 |
| 2026-09-23 12:00 |
07:23:27.60 |
+34:28:40.3 |
HIP 35932 |
18.76 |
| 2026-09-24 00:00 |
07:23:28.01 |
+34:28:43.0 |
HIP 35932 |
18.74 |
| 2026-09-24 12:00 |
07:23:28.40 |
+34:28:45.7 |
HIP 35932 |
18.72 |
| 2026-09-25 00:00 |
07:23:28.79 |
+34:28:48.4 |
HIP 35932 |
18.71 |
| 2026-09-25 12:00 |
07:23:29.16 |
+34:28:51.2 |
HIP 35932 |
18.70 |
| 2026-09-26 00:00 |
07:23:29.53 |
+34:28:54.0 |
HIP 35932 |
18.69 |
| 2026-09-26 12:00 |
07:23:29.88 |
+34:28:56.8 |
HIP 35932 |
18.68 |
| 2026-09-27 00:00 |
07:23:30.22 |
+34:28:59.7 |
HIP 35932 |
18.67 |
| 2026-09-27 12:00 |
07:23:30.55 |
+34:29:02.6 |
HIP 35932 |
18.67 |
| 2026-09-28 00:00 |
07:23:30.87 |
+34:29:05.5 |
HIP 35932 |
18.67 |
| 2026-09-28 12:00 |
07:23:31.17 |
+34:29:08.4 |
HIP 35932 |
18.67 |
| 2026-09-29 00:00 |
07:23:31.47 |
+34:29:11.4 |
HIP 35932 |
18.67 |
| 2026-09-29 12:00 |
07:23:31.75 |
+34:29:14.4 |
HIP 35932 |
18.68 |
| 2026-09-30 00:00 |
07:23:32.03 |
+34:29:17.4 |
HIP 35932 |
18.69 |
| 2026-09-30 12:00 |
07:23:32.29 |
+34:29:20.5 |
HIP 35932 |
18.70 |
| 2026-10-01 00:00 |
07:23:32.54 |
+34:29:23.5 |
HIP 35932 |
18.71 |
| 2026-10-01 12:00 |
07:23:32.78 |
+34:29:26.6 |
HIP 35932 |
18.72 |
| 2026-10-02 00:00 |
07:23:33.00 |
+34:29:29.8 |
HIP 35932 |
18.74 |
| 2026-10-02 12:00 |
07:23:33.22 |
+34:29:32.9 |
HIP 35932 |
18.75 |
| 2026-10-03 00:00 |
07:23:33.42 |
+34:29:36.1 |
HIP 35932 |
18.77 |
| 2026-10-03 12:00 |
07:23:33.62 |
+34:29:39.3 |
HIP 35932 |
18.79 |
| 2026-10-04 00:00 |
07:23:33.80 |
+34:29:42.6 |
HIP 35932 |
18.82 |
| 2026-10-04 12:00 |
07:23:33.97 |
+34:29:45.8 |
HIP 35932 |
18.84 |
| 2026-10-05 00:00 |
07:23:34.12 |
+34:29:49.1 |
HIP 35932 |
18.87 |
| 2026-10-05 12:00 |
07:23:34.27 |
+34:29:52.4 |
HIP 35932 |
18.90 |
| 2026-10-06 00:00 |
07:23:34.40 |
+34:29:55.8 |
HIP 35932 |
18.93 |
| 2026-10-06 12:00 |
07:23:34.53 |
+34:29:59.1 |
HIP 35932 |
18.96 |
| 2026-10-07 00:00 |
07:23:34.64 |
+34:30:02.5 |
HIP 35932 |
19.00 |
| 2026-10-07 12:00 |
07:23:34.73 |
+34:30:05.9 |
HIP 35932 |
19.03 |
| 2026-10-08 00:00 |
07:23:34.82 |
+34:30:09.4 |
HIP 35932 |
19.07 |
| 2026-10-08 12:00 |
07:23:34.90 |
+34:30:12.8 |
HIP 35932 |
19.11 |
| 2026-10-09 00:00 |
07:23:34.96 |
+34:30:16.3 |
HIP 35932 |
19.15 |
| 2026-10-09 12:00 |
07:23:35.01 |
+34:30:19.8 |
HIP 35932 |
19.20 |
| 2026-10-10 00:00 |
07:23:35.05 |
+34:30:23.3 |
HIP 35932 |
19.24 |
| 2026-10-10 12:00 |
07:23:35.08 |
+34:30:26.9 |
HIP 35932 |
19.29 |
| 2026-10-11 00:00 |
07:23:35.09 |
+34:30:30.5 |
HIP 35932 |
19.34 |