메타데이터
| 항목 |
값 |
| Designation |
C/1935 A1 (Johnson) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1935-02-26T11:16:10.096320Z |
| Orbit solution date (soln_date, UTC) |
2023-12-04T20:32:30Z |
| Obs used |
34 |
| NEO |
- |
| M1 |
11.200 |
| K1 |
26.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1935-02-28.0000000 |
| e |
0.99129724 |
| q (au) |
0.811142 |
| a (au) |
93.205234 |
| i (deg) |
65.423637 |
| Ω (om, deg) |
92.444706 |
| ω (w, deg) |
18.398934 |
| M (ma, deg) |
0.001676 |
밝기
산란 + 전체 선형
$$
M_a = (10.632 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.632 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.750 |
| k |
0.800 |
| δ90 |
1.066 |
| 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) |
| 2026-07-29 00:00 |
18:32:36.04 |
-33:50:36.5 |
HIP 90931 |
4.30 |
| 2026-07-29 12:00 |
18:32:34.78 |
-33:50:36.0 |
HIP 90931 |
4.55 |
| 2026-07-30 00:00 |
18:32:33.52 |
-33:50:35.4 |
HIP 90931 |
4.79 |
| 2026-07-30 12:00 |
18:32:32.27 |
-33:50:34.8 |
HIP 90931 |
5.04 |
| 2026-07-31 00:00 |
18:32:31.03 |
-33:50:34.2 |
HIP 90931 |
5.29 |
| 2026-07-31 12:00 |
18:32:29.79 |
-33:50:33.6 |
HIP 90931 |
5.54 |
| 2026-08-01 00:00 |
18:32:28.56 |
-33:50:33.0 |
HIP 90931 |
5.79 |
| 2026-08-01 12:00 |
18:32:27.34 |
-33:50:32.3 |
HIP 90931 |
6.04 |
| 2026-08-02 00:00 |
18:32:26.12 |
-33:50:31.5 |
HIP 90931 |
6.29 |
| 2026-08-02 12:00 |
18:32:24.91 |
-33:50:30.8 |
HIP 90931 |
6.53 |
| 2026-08-03 00:00 |
18:32:23.71 |
-33:50:30.0 |
HIP 90931 |
6.78 |
| 2026-08-03 12:00 |
18:32:22.51 |
-33:50:29.2 |
HIP 90931 |
7.02 |
| 2026-08-04 00:00 |
18:32:21.32 |
-33:50:28.4 |
HIP 90931 |
7.27 |
| 2026-08-04 12:00 |
18:32:20.14 |
-33:50:27.5 |
HIP 90931 |
7.51 |
| 2026-08-05 00:00 |
18:32:18.96 |
-33:50:26.6 |
HIP 90931 |
7.75 |
| 2026-08-05 12:00 |
18:32:17.79 |
-33:50:25.7 |
HIP 90931 |
7.99 |
| 2026-08-06 00:00 |
18:32:16.63 |
-33:50:24.8 |
HIP 90931 |
8.23 |
| 2026-08-06 12:00 |
18:32:15.47 |
-33:50:23.8 |
HIP 90931 |
8.47 |
| 2026-08-07 00:00 |
18:32:14.32 |
-33:50:22.8 |
HIP 90931 |
8.71 |
| 2026-08-07 12:00 |
18:32:13.18 |
-33:50:21.8 |
HIP 90931 |
8.94 |
| 2026-08-08 00:00 |
18:32:12.05 |
-33:50:20.7 |
HIP 90931 |
9.18 |
| 2026-08-08 12:00 |
18:32:10.93 |
-33:50:19.6 |
HIP 90931 |
9.41 |
| 2026-08-09 00:00 |
18:32:09.81 |
-33:50:18.5 |
HIP 90931 |
9.64 |
| 2026-08-09 12:00 |
18:32:08.70 |
-33:50:17.4 |
HIP 90931 |
9.87 |
| 2026-08-10 00:00 |
18:32:07.60 |
-33:50:16.2 |
HIP 90931 |
10.10 |
| 2026-08-10 12:00 |
18:32:06.50 |
-33:50:15.0 |
HIP 90931 |
10.33 |
| 2026-08-11 00:00 |
18:32:05.42 |
-33:50:13.8 |
HIP 90931 |
10.55 |
| 2026-08-11 12:00 |
18:32:04.34 |
-33:50:12.5 |
HIP 90931 |
10.77 |
| 2026-08-12 00:00 |
18:32:03.27 |
-33:50:11.2 |
HIP 90931 |
11.00 |
| 2026-08-12 12:00 |
18:32:02.21 |
-33:50:09.9 |
HIP 90931 |
11.22 |
| 2026-08-13 00:00 |
18:32:01.16 |
-33:50:08.6 |
HIP 90931 |
11.44 |
| 2026-08-13 12:00 |
18:32:00.11 |
-33:50:07.2 |
HIP 90931 |
11.65 |
| 2026-08-14 00:00 |
18:31:59.08 |
-33:50:05.8 |
HIP 90931 |
11.87 |
| 2026-08-14 12:00 |
18:31:58.05 |
-33:50:04.4 |
HIP 90931 |
12.08 |
| 2026-08-15 00:00 |
18:31:57.03 |
-33:50:03.0 |
HIP 90931 |
12.30 |
| 2026-08-15 12:00 |
18:31:56.02 |
-33:50:01.5 |
HIP 90931 |
12.51 |
| 2026-08-16 00:00 |
18:31:55.02 |
-33:50:00.0 |
HIP 90931 |
12.72 |
| 2026-08-16 12:00 |
18:31:54.03 |
-33:49:58.5 |
HIP 90931 |
12.92 |
| 2026-08-17 00:00 |
18:31:53.05 |
-33:49:56.9 |
HIP 90931 |
13.13 |
| 2026-08-17 12:00 |
18:31:52.08 |
-33:49:55.4 |
HIP 90931 |
13.33 |
| 2026-08-18 00:00 |
18:31:51.12 |
-33:49:53.8 |
HIP 90931 |
13.53 |
| 2026-08-18 12:00 |
18:31:50.16 |
-33:49:52.1 |
HIP 90931 |
13.73 |
| 2026-08-19 00:00 |
18:31:49.22 |
-33:49:50.5 |
HIP 90931 |
13.93 |