메타데이터
| 항목 |
값 |
| Designation |
C/2001 Q1 (NEAT) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2001-09-20T20:53:33.852480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:10Z |
| Obs used |
77 |
| NEO |
- |
| M1 |
11.900 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2001-09-28.0000000 |
| e |
0.96593590 |
| q (au) |
5.833970 |
| a (au) |
171.264460 |
| i (deg) |
66.950479 |
| Ω (om, deg) |
139.261335 |
| ω (w, deg) |
175.461635 |
| M (ma, deg) |
0.003135 |
밝기
산란 + 전체 선형
$$
M_a = (8.300 + 3.360\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.300 |
| n |
3.360 |
| gf |
0.882 |
| gb |
-0.935 |
| k |
1.000 |
| δ90 |
4.098 |
| 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 |
07:19:36.21 |
-19:31:58.8 |
HIP 35442 |
17.18 |
| 2026-05-12 12:00 |
07:19:37.97 |
-19:31:34.7 |
HIP 35442 |
17.03 |
| 2026-05-13 00:00 |
07:19:39.75 |
-19:31:10.7 |
HIP 35442 |
16.91 |
| 2026-05-13 12:00 |
07:19:41.55 |
-19:30:46.9 |
HIP 35442 |
16.80 |
| 2026-05-14 00:00 |
07:19:43.37 |
-19:30:23.3 |
HIP 35442 |
16.72 |
| 2026-05-14 12:00 |
07:19:45.21 |
-19:29:59.9 |
HIP 35442 |
16.67 |
| 2026-05-15 00:00 |
07:19:47.08 |
-19:29:36.6 |
HIP 35442 |
16.64 |
| 2026-05-15 12:00 |
07:19:48.96 |
-19:29:13.5 |
HIP 35442 |
16.64 |
| 2026-05-16 00:00 |
07:19:50.86 |
-19:28:50.5 |
HIP 35442 |
16.67 |
| 2026-05-16 12:00 |
07:19:52.78 |
-19:28:27.8 |
HIP 35442 |
16.72 |
| 2026-05-17 00:00 |
07:19:54.72 |
-19:28:05.2 |
HIP 35442 |
16.79 |
| 2026-05-17 12:00 |
07:19:56.68 |
-19:27:42.9 |
HIP 35442 |
16.90 |
| 2026-05-18 00:00 |
07:19:58.66 |
-19:27:20.6 |
HIP 35442 |
17.02 |
| 2026-05-18 12:00 |
07:20:00.65 |
-19:26:58.6 |
HIP 35593 |
16.63 |
| 2026-05-19 00:00 |
07:20:02.67 |
-19:26:36.8 |
HIP 35593 |
16.05 |
| 2026-05-19 12:00 |
07:20:04.70 |
-19:26:15.2 |
HIP 35593 |
15.48 |
| 2026-05-20 00:00 |
07:20:06.76 |
-19:25:53.7 |
HIP 35593 |
14.91 |
| 2026-05-20 12:00 |
07:20:08.83 |
-19:25:32.4 |
HIP 35593 |
14.34 |
| 2026-05-21 00:00 |
07:20:10.92 |
-19:25:11.4 |
HIP 35593 |
13.77 |
| 2026-05-21 12:00 |
07:20:13.03 |
-19:24:50.5 |
HIP 35593 |
13.21 |
| 2026-05-22 00:00 |
07:20:15.15 |
-19:24:29.8 |
HIP 35593 |
12.65 |
| 2026-05-22 12:00 |
07:20:17.30 |
-19:24:09.3 |
HIP 35593 |
12.10 |
| 2026-05-23 00:00 |
07:20:19.46 |
-19:23:49.0 |
HIP 35593 |
11.56 |
| 2026-05-23 12:00 |
07:20:21.64 |
-19:23:28.8 |
HIP 35593 |
11.02 |
| 2026-05-24 00:00 |
07:20:23.83 |
-19:23:08.9 |
HIP 35593 |
10.49 |
| 2026-05-24 12:00 |
07:20:26.05 |
-19:22:49.2 |
HIP 35593 |
9.98 |
| 2026-05-25 00:00 |
07:20:28.28 |
-19:22:29.7 |
HIP 35593 |
9.47 |
| 2026-05-25 12:00 |
07:20:30.52 |
-19:22:10.4 |
HIP 35593 |
8.99 |
| 2026-05-26 00:00 |
07:20:32.79 |
-19:21:51.2 |
HIP 35593 |
8.52 |
| 2026-05-26 12:00 |
07:20:35.07 |
-19:21:32.3 |
HIP 35593 |
8.08 |
| 2026-05-27 00:00 |
07:20:37.36 |
-19:21:13.6 |
HIP 35593 |
7.66 |
| 2026-05-27 12:00 |
07:20:39.67 |
-19:20:55.0 |
HIP 35593 |
7.28 |
| 2026-05-28 00:00 |
07:20:42.00 |
-19:20:36.7 |
HIP 35593 |
6.94 |
| 2026-05-28 12:00 |
07:20:44.35 |
-19:20:18.6 |
HIP 35593 |
6.64 |
| 2026-05-29 00:00 |
07:20:46.71 |
-19:20:00.7 |
HIP 35593 |
6.40 |
| 2026-05-29 12:00 |
07:20:49.08 |
-19:19:43.0 |
HIP 35593 |
6.21 |
| 2026-05-30 00:00 |
07:20:51.47 |
-19:19:25.5 |
HIP 35593 |
6.09 |
| 2026-05-30 12:00 |
07:20:53.88 |
-19:19:08.2 |
HIP 35593 |
6.04 |
| 2026-05-31 00:00 |
07:20:56.30 |
-19:18:51.1 |
HIP 35593 |
6.06 |
| 2026-05-31 12:00 |
07:20:58.73 |
-19:18:34.2 |
HIP 35593 |
6.15 |
| 2026-06-01 00:00 |
07:21:01.18 |
-19:18:17.5 |
HIP 35593 |
6.31 |
| 2026-06-01 12:00 |
07:21:03.65 |
-19:18:01.0 |
HIP 35593 |
6.53 |
| 2026-06-02 00:00 |
07:21:06.13 |
-19:17:44.8 |
HIP 35593 |
6.82 |