메타데이터
| 항목 |
값 |
| Designation |
C/1907 L2 (Daniel) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1907-09-04T11:05:22.588800Z |
| Orbit solution date (soln_date, UTC) |
2021-05-03T17:43:15Z |
| Obs used |
173 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1907-09-27.0000000 |
| e |
0.99876748 |
| q (au) |
0.512178 |
| a (au) |
415.554273 |
| i (deg) |
8.957993 |
| Ω (om, deg) |
144.267134 |
| ω (w, deg) |
294.470456 |
| M (ma, deg) |
0.002622 |
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) |
| 2026-07-29 00:00 |
16:47:02.68 |
-13:45:08.8 |
HIP 82179 |
6.20 |
| 2026-07-29 12:00 |
16:47:02.13 |
-13:45:09.4 |
HIP 82179 |
6.29 |
| 2026-07-30 00:00 |
16:47:01.59 |
-13:45:10.1 |
HIP 82179 |
6.39 |
| 2026-07-30 12:00 |
16:47:01.05 |
-13:45:10.8 |
HIP 82179 |
6.49 |
| 2026-07-31 00:00 |
16:47:00.52 |
-13:45:11.5 |
HIP 82179 |
6.58 |
| 2026-07-31 12:00 |
16:47:00.00 |
-13:45:12.2 |
HIP 82179 |
6.68 |
| 2026-08-01 00:00 |
16:46:59.48 |
-13:45:13.0 |
HIP 82179 |
6.77 |
| 2026-08-01 12:00 |
16:46:58.97 |
-13:45:13.7 |
HIP 82179 |
6.86 |
| 2026-08-02 00:00 |
16:46:58.47 |
-13:45:14.5 |
HIP 82179 |
6.96 |
| 2026-08-02 12:00 |
16:46:57.97 |
-13:45:15.3 |
HIP 82179 |
7.05 |
| 2026-08-03 00:00 |
16:46:57.48 |
-13:45:16.2 |
HIP 82179 |
7.14 |
| 2026-08-03 12:00 |
16:46:56.99 |
-13:45:17.0 |
HIP 82179 |
7.23 |
| 2026-08-04 00:00 |
16:46:56.51 |
-13:45:17.9 |
HIP 82179 |
7.33 |
| 2026-08-04 12:00 |
16:46:56.04 |
-13:45:18.8 |
HIP 82179 |
7.42 |
| 2026-08-05 00:00 |
16:46:55.58 |
-13:45:19.7 |
HIP 82179 |
7.50 |
| 2026-08-05 12:00 |
16:46:55.12 |
-13:45:20.7 |
HIP 82179 |
7.59 |
| 2026-08-06 00:00 |
16:46:54.67 |
-13:45:21.6 |
HIP 82179 |
7.68 |
| 2026-08-06 12:00 |
16:46:54.22 |
-13:45:22.6 |
HIP 82179 |
7.77 |
| 2026-08-07 00:00 |
16:46:53.79 |
-13:45:23.6 |
HIP 82179 |
7.85 |
| 2026-08-07 12:00 |
16:46:53.35 |
-13:45:24.6 |
HIP 82179 |
7.93 |
| 2026-08-08 00:00 |
16:46:52.93 |
-13:45:25.7 |
HIP 82179 |
8.02 |
| 2026-08-08 12:00 |
16:46:52.51 |
-13:45:26.7 |
HIP 82179 |
8.10 |
| 2026-08-09 00:00 |
16:46:52.10 |
-13:45:27.8 |
HIP 82179 |
8.18 |
| 2026-08-09 12:00 |
16:46:51.70 |
-13:45:28.9 |
HIP 82179 |
8.26 |
| 2026-08-10 00:00 |
16:46:51.31 |
-13:45:30.0 |
HIP 82179 |
8.34 |
| 2026-08-10 12:00 |
16:46:50.92 |
-13:45:31.2 |
HIP 82179 |
8.41 |
| 2026-08-11 00:00 |
16:46:50.54 |
-13:45:32.3 |
HIP 82179 |
8.49 |
| 2026-08-11 12:00 |
16:46:50.16 |
-13:45:33.5 |
HIP 82179 |
8.56 |
| 2026-08-12 00:00 |
16:46:49.80 |
-13:45:34.7 |
HIP 82179 |
8.64 |
| 2026-08-12 12:00 |
16:46:49.44 |
-13:45:36.0 |
HIP 82179 |
8.71 |
| 2026-08-13 00:00 |
16:46:49.08 |
-13:45:37.2 |
HIP 82179 |
8.78 |
| 2026-08-13 12:00 |
16:46:48.74 |
-13:45:38.5 |
HIP 82179 |
8.84 |
| 2026-08-14 00:00 |
16:46:48.40 |
-13:45:39.7 |
HIP 82179 |
8.91 |
| 2026-08-14 12:00 |
16:46:48.07 |
-13:45:41.0 |
HIP 82179 |
8.98 |
| 2026-08-15 00:00 |
16:46:47.75 |
-13:45:42.4 |
HIP 82179 |
9.04 |
| 2026-08-15 12:00 |
16:46:47.43 |
-13:45:43.7 |
HIP 82179 |
9.10 |
| 2026-08-16 00:00 |
16:46:47.12 |
-13:45:45.1 |
HIP 82179 |
9.16 |
| 2026-08-16 12:00 |
16:46:46.82 |
-13:45:46.5 |
HIP 82179 |
9.22 |
| 2026-08-17 00:00 |
16:46:46.53 |
-13:45:47.9 |
HIP 82179 |
9.28 |
| 2026-08-17 12:00 |
16:46:46.25 |
-13:45:49.3 |
HIP 82179 |
9.34 |
| 2026-08-18 00:00 |
16:46:45.97 |
-13:45:50.7 |
HIP 82179 |
9.39 |
| 2026-08-18 12:00 |
16:46:45.70 |
-13:45:52.2 |
HIP 82179 |
9.45 |
| 2026-08-19 00:00 |
16:46:45.43 |
-13:45:53.7 |
HIP 82179 |
9.50 |