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) |
| 2026-06-01 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 |
| 2026-06-02 12:00 |
20:29:14.31 |
-21:51:43.8 |
HIP 100951 |
18.70 |
| 2026-06-03 00:00 |
20:29:13.79 |
-21:51:46.1 |
HIP 100951 |
18.57 |
| 2026-06-03 12:00 |
20:29:13.26 |
-21:51:48.4 |
HIP 100951 |
18.45 |
| 2026-06-04 00:00 |
20:29:12.73 |
-21:51:50.8 |
HIP 100951 |
18.32 |
| 2026-06-04 12:00 |
20:29:12.19 |
-21:51:53.1 |
HIP 100951 |
18.19 |
| 2026-06-05 00:00 |
20:29:11.64 |
-21:51:55.5 |
HIP 100951 |
18.07 |
| 2026-06-05 12:00 |
20:29:11.09 |
-21:51:57.9 |
HIP 100951 |
17.94 |
| 2026-06-06 00:00 |
20:29:10.53 |
-21:52:00.3 |
HIP 100951 |
17.80 |
| 2026-06-06 12:00 |
20:29:09.97 |
-21:52:02.7 |
HIP 100951 |
17.67 |
| 2026-06-07 00:00 |
20:29:09.40 |
-21:52:05.2 |
HIP 100951 |
17.54 |
| 2026-06-07 12:00 |
20:29:08.82 |
-21:52:07.6 |
HIP 100951 |
17.40 |
| 2026-06-08 00:00 |
20:29:08.24 |
-21:52:10.1 |
HIP 100951 |
17.27 |
| 2026-06-08 12:00 |
20:29:07.65 |
-21:52:12.6 |
HIP 100951 |
17.13 |
| 2026-06-09 00:00 |
20:29:07.06 |
-21:52:15.1 |
HIP 100951 |
16.99 |
| 2026-06-09 12:00 |
20:29:06.46 |
-21:52:17.6 |
HIP 100951 |
16.85 |
| 2026-06-10 00:00 |
20:29:05.86 |
-21:52:20.1 |
HIP 100951 |
16.71 |
| 2026-06-10 12:00 |
20:29:05.25 |
-21:52:22.7 |
HIP 100951 |
16.57 |
| 2026-06-11 00:00 |
20:29:04.63 |
-21:52:25.3 |
HIP 100951 |
16.43 |
| 2026-06-11 12:00 |
20:29:04.01 |
-21:52:27.9 |
HIP 100951 |
16.28 |
| 2026-06-12 00:00 |
20:29:03.38 |
-21:52:30.5 |
HIP 100951 |
16.14 |
| 2026-06-12 12:00 |
20:29:02.75 |
-21:52:33.1 |
HIP 100951 |
15.99 |
| 2026-06-13 00:00 |
20:29:02.12 |
-21:52:35.7 |
HIP 100951 |
15.84 |
| 2026-06-13 12:00 |
20:29:01.47 |
-21:52:38.3 |
HIP 100951 |
15.70 |
| 2026-06-14 00:00 |
20:29:00.82 |
-21:52:41.0 |
HIP 100951 |
15.55 |
| 2026-06-14 12:00 |
20:29:00.17 |
-21:52:43.7 |
HIP 100951 |
15.40 |
| 2026-06-15 00:00 |
20:28:59.51 |
-21:52:46.4 |
HIP 100951 |
15.24 |
| 2026-06-15 12:00 |
20:28:58.85 |
-21:52:49.1 |
HIP 100951 |
15.09 |
| 2026-06-16 00:00 |
20:28:58.18 |
-21:52:51.8 |
HIP 100951 |
14.94 |
| 2026-06-16 12:00 |
20:28:57.51 |
-21:52:54.5 |
HIP 100951 |
14.78 |
| 2026-06-17 00:00 |
20:28:56.83 |
-21:52:57.2 |
HIP 100951 |
14.63 |
| 2026-06-17 12:00 |
20:28:56.14 |
-21:53:00.0 |
HIP 100951 |
14.47 |
| 2026-06-18 00:00 |
20:28:55.45 |
-21:53:02.8 |
HIP 100951 |
14.32 |
| 2026-06-18 12:00 |
20:28:54.76 |
-21:53:05.5 |
HIP 100951 |
14.16 |
| 2026-06-19 00:00 |
20:28:54.06 |
-21:53:08.3 |
HIP 100951 |
14.00 |
| 2026-06-19 12:00 |
20:28:53.36 |
-21:53:11.1 |
HIP 100951 |
13.84 |
| 2026-06-20 00:00 |
20:28:52.65 |
-21:53:13.9 |
HIP 100951 |
13.68 |
| 2026-06-20 12:00 |
20:28:51.94 |
-21:53:16.7 |
HIP 100951 |
13.52 |
| 2026-06-21 00:00 |
20:28:51.22 |
-21:53:19.6 |
HIP 100951 |
13.36 |
| 2026-06-21 12:00 |
20:28:50.50 |
-21:53:22.4 |
HIP 100951 |
13.20 |
| 2026-06-22 00:00 |
20:28:49.78 |
-21:53:25.3 |
HIP 100951 |
13.04 |