메타데이터
| 항목 |
값 |
| Designation |
C/1906 E1 (Kopff) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1905-10-18T07:17:39.871680Z |
| Orbit solution date (soln_date, UTC) |
2024-02-20T20:16:47Z |
| Obs used |
124 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1906-04-15.0000000 |
| e |
1.00192424 |
| q (au) |
3.340132 |
| a (au) |
-1735.821106 |
| i (deg) |
4.282821 |
| Ω (om, deg) |
343.624176 |
| ω (w, deg) |
158.608146 |
| M (ma, deg) |
0.002435 |
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) |
| 2026-05-12 00:00 |
20:29:30.41 |
-21:50:24.0 |
HIP 100951 |
22.59 |
| 2026-05-12 12:00 |
20:29:30.18 |
-21:50:25.4 |
HIP 100951 |
22.54 |
| 2026-05-13 00:00 |
20:29:29.95 |
-21:50:26.8 |
HIP 100951 |
22.48 |
| 2026-05-13 12:00 |
20:29:29.71 |
-21:50:28.2 |
HIP 100951 |
22.42 |
| 2026-05-14 00:00 |
20:29:29.47 |
-21:50:29.6 |
HIP 100951 |
22.36 |
| 2026-05-14 12:00 |
20:29:29.21 |
-21:50:31.1 |
HIP 100951 |
22.29 |
| 2026-05-15 00:00 |
20:29:28.95 |
-21:50:32.6 |
HIP 100951 |
22.23 |
| 2026-05-15 12:00 |
20:29:28.68 |
-21:50:34.2 |
HIP 100951 |
22.16 |
| 2026-05-16 00:00 |
20:29:28.40 |
-21:50:35.7 |
HIP 100951 |
22.09 |
| 2026-05-16 12:00 |
20:29:28.12 |
-21:50:37.3 |
HIP 100951 |
22.02 |
| 2026-05-17 00:00 |
20:29:27.83 |
-21:50:38.9 |
HIP 100951 |
21.95 |
| 2026-05-17 12:00 |
20:29:27.53 |
-21:50:40.5 |
HIP 100951 |
21.88 |
| 2026-05-18 00:00 |
20:29:27.22 |
-21:50:42.1 |
HIP 100951 |
21.80 |
| 2026-05-18 12:00 |
20:29:26.91 |
-21:50:43.8 |
HIP 100951 |
21.72 |
| 2026-05-19 00:00 |
20:29:26.59 |
-21:50:45.5 |
HIP 100951 |
21.65 |
| 2026-05-19 12:00 |
20:29:26.26 |
-21:50:47.2 |
HIP 100951 |
21.57 |
| 2026-05-20 00:00 |
20:29:25.93 |
-21:50:49.0 |
HIP 100951 |
21.48 |
| 2026-05-20 12:00 |
20:29:25.59 |
-21:50:50.7 |
HIP 100951 |
21.40 |
| 2026-05-21 00:00 |
20:29:25.24 |
-21:50:52.5 |
HIP 100951 |
21.32 |
| 2026-05-21 12:00 |
20:29:24.88 |
-21:50:54.3 |
HIP 100951 |
21.23 |
| 2026-05-22 00:00 |
20:29:24.52 |
-21:50:56.1 |
HIP 100951 |
21.14 |
| 2026-05-22 12:00 |
20:29:24.15 |
-21:50:58.0 |
HIP 100951 |
21.05 |
| 2026-05-23 00:00 |
20:29:23.77 |
-21:50:59.8 |
HIP 100951 |
20.96 |
| 2026-05-23 12:00 |
20:29:23.39 |
-21:51:01.7 |
HIP 100951 |
20.87 |
| 2026-05-24 00:00 |
20:29:23.00 |
-21:51:03.6 |
HIP 100951 |
20.77 |
| 2026-05-24 12:00 |
20:29:22.60 |
-21:51:05.6 |
HIP 100951 |
20.68 |
| 2026-05-25 00:00 |
20:29:22.19 |
-21:51:07.5 |
HIP 100951 |
20.58 |
| 2026-05-25 12:00 |
20:29:21.78 |
-21:51:09.5 |
HIP 100951 |
20.48 |
| 2026-05-26 00:00 |
20:29:21.37 |
-21:51:11.5 |
HIP 100951 |
20.38 |
| 2026-05-26 12:00 |
20:29:20.94 |
-21:51:13.5 |
HIP 100951 |
20.28 |
| 2026-05-27 00:00 |
20:29:20.51 |
-21:51:15.6 |
HIP 100951 |
20.17 |
| 2026-05-27 12:00 |
20:29:20.07 |
-21:51:17.6 |
HIP 100951 |
20.07 |
| 2026-05-28 00:00 |
20:29:19.63 |
-21:51:19.7 |
HIP 100951 |
19.96 |
| 2026-05-28 12:00 |
20:29:19.18 |
-21:51:21.8 |
HIP 100951 |
19.85 |
| 2026-05-29 00:00 |
20:29:18.72 |
-21:51:23.9 |
HIP 100951 |
19.74 |
| 2026-05-29 12:00 |
20:29:18.25 |
-21:51:26.0 |
HIP 100951 |
19.63 |
| 2026-05-30 00:00 |
20:29:17.78 |
-21:51:28.2 |
HIP 100951 |
19.52 |
| 2026-05-30 12:00 |
20:29:17.31 |
-21:51:30.4 |
HIP 100951 |
19.41 |
| 2026-05-31 00:00 |
20:29:16.82 |
-21:51:32.6 |
HIP 100951 |
19.29 |
| 2026-05-31 12:00 |
20:29:16.33 |
-21:51:34.8 |
HIP 100951 |
19.18 |
| 2026-06-01 00:00 |
20:29:15.84 |
-21:51:37.0 |
HIP 100951 |
19.06 |
| 2026-06-01 12:00 |
20:29:15.33 |
-21:51:39.2 |
HIP 100951 |
18.94 |
| 2026-06-02 00:00 |
20:29:14.82 |
-21:51:41.5 |
HIP 100951 |
18.82 |