메타데이터
| 항목 |
값 |
| Designation |
C/1924 R1 (Finsler) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1924-09-04T19:45:38.554560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:02Z |
| Obs used |
8 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1924-09-28.0000000 |
| e |
0.99853004 |
| q (au) |
0.405911 |
| a (au) |
276.136968 |
| i (deg) |
120.113818 |
| Ω (om, deg) |
81.148388 |
| ω (w, deg) |
66.501893 |
| M (ma, deg) |
0.004978 |
밝기
산란 + 전체 선형
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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 |
12:38:54.66 |
-59:24:28.4 |
HIP 61808 |
13.66 |
| 2026-03-26 12:00 |
12:38:52.80 |
-59:24:26.4 |
HIP 61808 |
13.84 |
| 2026-03-27 00:00 |
12:38:50.94 |
-59:24:24.2 |
HIP 61808 |
14.02 |
| 2026-03-27 12:00 |
12:38:49.08 |
-59:24:22.0 |
HIP 61808 |
14.20 |
| 2026-03-28 00:00 |
12:38:47.21 |
-59:24:19.6 |
HIP 61808 |
14.38 |
| 2026-03-28 12:00 |
12:38:45.35 |
-59:24:17.1 |
HIP 61808 |
14.57 |
| 2026-03-29 00:00 |
12:38:43.48 |
-59:24:14.5 |
HIP 61808 |
14.76 |
| 2026-03-29 12:00 |
12:38:41.62 |
-59:24:11.7 |
HIP 61569 |
14.81 |
| 2026-03-30 00:00 |
12:38:39.75 |
-59:24:08.9 |
HIP 61569 |
14.62 |
| 2026-03-30 12:00 |
12:38:37.89 |
-59:24:06.0 |
HIP 61569 |
14.43 |
| 2026-03-31 00:00 |
12:38:36.02 |
-59:24:02.9 |
HIP 61569 |
14.24 |
| 2026-03-31 12:00 |
12:38:34.15 |
-59:23:59.7 |
HIP 61569 |
14.05 |
| 2026-04-01 00:00 |
12:38:32.29 |
-59:23:56.5 |
HIP 61569 |
13.86 |
| 2026-04-01 12:00 |
12:38:30.42 |
-59:23:53.1 |
HIP 61569 |
13.68 |
| 2026-04-02 00:00 |
12:38:28.55 |
-59:23:49.6 |
HIP 61569 |
13.50 |
| 2026-04-02 12:00 |
12:38:26.69 |
-59:23:46.0 |
HIP 61569 |
13.33 |
| 2026-04-03 00:00 |
12:38:24.82 |
-59:23:42.3 |
HIP 61569 |
13.16 |
| 2026-04-03 12:00 |
12:38:22.96 |
-59:23:38.4 |
HIP 61569 |
12.99 |
| 2026-04-04 00:00 |
12:38:21.09 |
-59:23:34.5 |
HIP 61569 |
12.82 |
| 2026-04-04 12:00 |
12:38:19.23 |
-59:23:30.5 |
HIP 61569 |
12.66 |
| 2026-04-05 00:00 |
12:38:17.37 |
-59:23:26.3 |
HIP 61569 |
12.50 |
| 2026-04-05 12:00 |
12:38:15.51 |
-59:23:22.1 |
HIP 61569 |
12.35 |
| 2026-04-06 00:00 |
12:38:13.65 |
-59:23:17.7 |
HIP 61569 |
12.20 |
| 2026-04-06 12:00 |
12:38:11.79 |
-59:23:13.3 |
HIP 61569 |
12.05 |
| 2026-04-07 00:00 |
12:38:09.93 |
-59:23:08.7 |
HIP 61569 |
11.91 |
| 2026-04-07 12:00 |
12:38:08.08 |
-59:23:04.0 |
HIP 61569 |
11.77 |
| 2026-04-08 00:00 |
12:38:06.23 |
-59:22:59.2 |
HIP 61569 |
11.64 |
| 2026-04-08 12:00 |
12:38:04.38 |
-59:22:54.3 |
HIP 61569 |
11.52 |
| 2026-04-09 00:00 |
12:38:02.53 |
-59:22:49.3 |
HIP 61569 |
11.39 |
| 2026-04-09 12:00 |
12:38:00.69 |
-59:22:44.2 |
HIP 61569 |
11.28 |
| 2026-04-10 00:00 |
12:37:58.84 |
-59:22:39.0 |
HIP 61569 |
11.17 |
| 2026-04-10 12:00 |
12:37:57.00 |
-59:22:33.7 |
HIP 61569 |
11.07 |
| 2026-04-11 00:00 |
12:37:55.16 |
-59:22:28.3 |
HIP 61569 |
10.97 |
| 2026-04-11 12:00 |
12:37:53.33 |
-59:22:22.8 |
HIP 61569 |
10.88 |
| 2026-04-12 00:00 |
12:37:51.50 |
-59:22:17.2 |
HIP 61569 |
10.80 |
| 2026-04-12 12:00 |
12:37:49.67 |
-59:22:11.5 |
HIP 61569 |
10.72 |
| 2026-04-13 00:00 |
12:37:47.85 |
-59:22:05.6 |
HIP 61569 |
10.65 |
| 2026-04-13 12:00 |
12:37:46.02 |
-59:21:59.7 |
HIP 61569 |
10.59 |
| 2026-04-14 00:00 |
12:37:44.21 |
-59:21:53.7 |
HIP 61569 |
10.53 |
| 2026-04-14 12:00 |
12:37:42.39 |
-59:21:47.6 |
HIP 61569 |
10.48 |
| 2026-04-15 00:00 |
12:37:40.58 |
-59:21:41.3 |
HIP 61569 |
10.44 |
| 2026-04-15 12:00 |
12:37:38.78 |
-59:21:35.0 |
HIP 61569 |
10.41 |
| 2026-04-16 00:00 |
12:37:36.98 |
-59:21:28.6 |
HIP 61569 |
10.38 |