메타데이터
| 항목 |
값 |
| Designation |
C/2014 C3 (NEOWISE) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-01-16T17:29:08.499840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:49Z |
| Obs used |
601 |
| NEO |
- |
| M1 |
15.000 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-03-28.0000000 |
| e |
0.98282842 |
| q (au) |
1.862025 |
| a (au) |
108.436469 |
| i (deg) |
151.784310 |
| Ω (om, deg) |
204.406943 |
| ω (w, deg) |
345.876795 |
| M (ma, deg) |
0.061337 |
밝기
산란 + 전체 선형
$$
M_a = (14.486 + 3.306\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.486 |
| n |
3.306 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
0.800 |
| δ90 |
1.033 |
| 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 |
03:39:18.47 |
+38:15:51.4 |
HIP 17019 |
27.25 |
| 2026-03-26 12:00 |
03:39:21.41 |
+38:15:40.9 |
HIP 17019 |
27.52 |
| 2026-03-27 00:00 |
03:39:24.38 |
+38:15:30.7 |
HIP 17019 |
27.79 |
| 2026-03-27 12:00 |
03:39:27.38 |
+38:15:20.6 |
HIP 17094 |
27.94 |
| 2026-03-28 00:00 |
03:39:30.42 |
+38:15:10.7 |
HIP 17094 |
27.72 |
| 2026-03-28 12:00 |
03:39:33.48 |
+38:15:01.1 |
HIP 17094 |
27.52 |
| 2026-03-29 00:00 |
03:39:36.58 |
+38:14:51.7 |
HIP 17094 |
27.34 |
| 2026-03-29 12:00 |
03:39:39.72 |
+38:14:42.4 |
HIP 17094 |
27.17 |
| 2026-03-30 00:00 |
03:39:42.88 |
+38:14:33.4 |
HIP 17094 |
27.02 |
| 2026-03-30 12:00 |
03:39:46.08 |
+38:14:24.6 |
HIP 17094 |
26.89 |
| 2026-03-31 00:00 |
03:39:49.30 |
+38:14:16.0 |
HIP 17094 |
26.77 |
| 2026-03-31 12:00 |
03:39:52.56 |
+38:14:07.6 |
HIP 17094 |
26.68 |
| 2026-04-01 00:00 |
03:39:55.85 |
+38:13:59.4 |
HIP 17094 |
26.60 |
| 2026-04-01 12:00 |
03:39:59.17 |
+38:13:51.4 |
HIP 17094 |
26.55 |
| 2026-04-02 00:00 |
03:40:02.52 |
+38:13:43.6 |
HIP 17094 |
26.52 |
| 2026-04-02 12:00 |
03:40:05.90 |
+38:13:36.0 |
HIP 17094 |
26.50 |
| 2026-04-03 00:00 |
03:40:09.30 |
+38:13:28.6 |
HIP 17094 |
26.51 |
| 2026-04-03 12:00 |
03:40:12.74 |
+38:13:21.5 |
HIP 17094 |
26.55 |
| 2026-04-04 00:00 |
03:40:16.21 |
+38:13:14.5 |
HIP 17094 |
26.60 |
| 2026-04-04 12:00 |
03:40:19.71 |
+38:13:07.7 |
HIP 17094 |
26.68 |
| 2026-04-05 00:00 |
03:40:23.23 |
+38:13:01.2 |
HIP 17094 |
26.78 |
| 2026-04-05 12:00 |
03:40:26.78 |
+38:12:54.8 |
HIP 17094 |
26.90 |
| 2026-04-06 00:00 |
03:40:30.36 |
+38:12:48.7 |
HIP 17094 |
27.05 |
| 2026-04-06 12:00 |
03:40:33.97 |
+38:12:42.7 |
HIP 17094 |
27.22 |
| 2026-04-07 00:00 |
03:40:37.61 |
+38:12:37.0 |
HIP 17094 |
27.41 |
| 2026-04-07 12:00 |
03:40:41.27 |
+38:12:31.5 |
HIP 17094 |
27.63 |
| 2026-04-08 00:00 |
03:40:44.96 |
+38:12:26.1 |
HIP 17094 |
27.87 |
| 2026-04-08 12:00 |
03:40:48.68 |
+38:12:21.0 |
HIP 17094 |
28.13 |
| 2026-04-09 00:00 |
03:40:52.42 |
+38:12:16.1 |
HIP 17094 |
28.41 |
| 2026-04-09 12:00 |
03:40:56.19 |
+38:12:11.4 |
HIP 17094 |
28.72 |
| 2026-04-10 00:00 |
03:40:59.98 |
+38:12:06.9 |
HIP 17094 |
29.05 |
| 2026-04-10 12:00 |
03:41:03.80 |
+38:12:02.6 |
HIP 17094 |
29.40 |
| 2026-04-11 00:00 |
03:41:07.65 |
+38:11:58.5 |
HIP 17094 |
29.76 |
| 2026-04-11 12:00 |
03:41:11.52 |
+38:11:54.6 |
HIP 17094 |
30.15 |
| 2026-04-12 00:00 |
03:41:15.41 |
+38:11:50.9 |
HIP 17094 |
30.56 |
| 2026-04-12 12:00 |
03:41:19.33 |
+38:11:47.4 |
HIP 17094 |
30.99 |
| 2026-04-13 00:00 |
03:41:23.27 |
+38:11:44.1 |
HIP 17094 |
31.44 |
| 2026-04-13 12:00 |
03:41:27.24 |
+38:11:41.0 |
HIP 17412 |
31.35 |
| 2026-04-14 00:00 |
03:41:31.23 |
+38:11:38.1 |
HIP 17412 |
30.62 |
| 2026-04-14 12:00 |
03:41:35.24 |
+38:11:35.4 |
HIP 17412 |
29.88 |
| 2026-04-15 00:00 |
03:41:39.28 |
+38:11:32.9 |
HIP 17412 |
29.15 |
| 2026-04-15 12:00 |
03:41:43.34 |
+38:11:30.6 |
HIP 17412 |
28.42 |
| 2026-04-16 00:00 |
03:41:47.42 |
+38:11:28.5 |
HIP 17412 |
27.69 |