메타데이터
| 항목 |
값 |
| Designation |
C/2024 G7 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-02-10T07:44:47.034240Z |
| Orbit solution date (soln_date, UTC) |
2026-03-31T09:42:18Z |
| Obs used |
85 |
| NEO |
- |
| M1 |
11.600 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-04-03T08:20:06.028800Z |
| Discovery magnitude (MPC) |
19.41 o |
| Discovery observatory (MPC) |
W68 · ATLAS Chile, Rio Hurtado |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2024-07-18.0000000 |
| e |
1.00160384 |
| q (au) |
6.027571 |
| a (au) |
-3758.217039 |
| i (deg) |
131.518835 |
| Ω (om, deg) |
191.947034 |
| ω (w, deg) |
289.665780 |
| M (ma, deg) |
-0.000887 |
밝기
산란 + 전체 선형
$$
M_a = (10.242 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.242 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.964 |
| k |
1.000 |
| δ90 |
10.000 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
13:53:11.20 |
-42:06:01.3 |
HIP 67726 |
17.58 |
| 2026-03-26 12:00 |
13:52:42.12 |
-42:03:22.8 |
HIP 67726 |
18.48 |
| 2026-03-27 00:00 |
13:52:12.96 |
-42:00:42.1 |
HIP 67625 |
14.71 |
| 2026-03-27 12:00 |
13:51:43.71 |
-41:57:59.2 |
HIP 67625 |
9.63 |
| 2026-03-28 00:00 |
13:51:14.39 |
-41:55:14.2 |
HIP 67625 |
6.53 |
| 2026-03-28 12:00 |
13:50:44.99 |
-41:52:26.9 |
HIP 67625 |
8.20 |
| 2026-03-29 00:00 |
13:50:15.53 |
-41:49:37.6 |
HIP 67464 |
11.88 |
| 2026-03-29 12:00 |
13:49:45.99 |
-41:46:46.0 |
HIP 67464 |
6.24 |
| 2026-03-30 00:00 |
13:49:16.39 |
-41:43:52.3 |
HIP 67464 |
3.68 |
| 2026-03-30 12:00 |
13:48:46.73 |
-41:40:56.5 |
HIP 67464 |
8.14 |
| 2026-03-31 00:00 |
13:48:17.01 |
-41:37:58.5 |
HIP 67464 |
14.08 |
| 2026-03-31 12:00 |
13:47:47.23 |
-41:34:58.3 |
HIP 67259 |
10.88 |
| 2026-04-01 00:00 |
13:47:17.41 |
-41:31:56.0 |
HIP 67259 |
5.47 |
| 2026-04-01 12:00 |
13:46:47.53 |
-41:28:51.6 |
HIP 67259 |
4.72 |
| 2026-04-02 00:00 |
13:46:17.62 |
-41:25:45.0 |
HIP 67259 |
9.82 |
| 2026-04-02 12:00 |
13:45:47.66 |
-41:22:36.3 |
HIP 67113 |
5.10 |
| 2026-04-03 00:00 |
13:45:17.67 |
-41:19:25.4 |
HIP 67119 |
1.58 |
| 2026-04-03 12:00 |
13:44:47.64 |
-41:16:12.5 |
HIP 67119 |
6.91 |
| 2026-04-04 00:00 |
13:44:17.58 |
-41:12:57.4 |
HIP 67009 |
8.83 |
| 2026-04-04 12:00 |
13:43:47.50 |
-41:09:40.2 |
HIP 67009 |
11.42 |
| 2026-04-05 00:00 |
13:43:17.39 |
-41:06:20.9 |
HIP 67009 |
16.41 |
| 2026-04-05 12:00 |
13:42:47.26 |
-41:02:59.5 |
HIP 66924 |
21.12 |
| 2026-04-06 00:00 |
13:42:17.11 |
-40:59:36.0 |
HIP 66813 |
23.95 |
| 2026-04-06 12:00 |
13:41:46.95 |
-40:56:10.5 |
HIP 66813 |
19.62 |
| 2026-04-07 00:00 |
13:41:16.79 |
-40:52:42.8 |
HIP 66813 |
16.86 |
| 2026-04-07 12:00 |
13:40:46.61 |
-40:49:13.1 |
HIP 66813 |
16.48 |
| 2026-04-08 00:00 |
13:40:16.44 |
-40:45:41.4 |
HIP 66813 |
18.68 |
| 2026-04-08 12:00 |
13:39:46.26 |
-40:42:07.6 |
HIP 66813 |
22.72 |
| 2026-04-09 00:00 |
13:39:16.09 |
-40:38:31.8 |
HIP 66447 |
27.15 |
| 2026-04-09 12:00 |
13:38:45.93 |
-40:34:54.0 |
HIP 66447 |
25.27 |
| 2026-04-10 00:00 |
13:38:15.77 |
-40:31:14.2 |
HIP 66447 |
25.16 |
| 2026-04-10 12:00 |
13:37:45.64 |
-40:27:32.4 |
HIP 66447 |
26.85 |
| 2026-04-11 00:00 |
13:37:15.52 |
-40:23:48.6 |
HIP 66447 |
30.06 |
| 2026-04-11 12:00 |
13:36:45.42 |
-40:20:02.8 |
HIP 66255 |
23.84 |
| 2026-04-12 00:00 |
13:36:15.35 |
-40:16:15.1 |
HIP 66255 |
17.56 |
| 2026-04-12 12:00 |
13:35:45.30 |
-40:12:25.4 |
HIP 66255 |
11.95 |
| 2026-04-13 00:00 |
13:35:15.29 |
-40:08:33.8 |
HIP 66255 |
8.52 |
| 2026-04-13 12:00 |
13:34:45.32 |
-40:04:40.3 |
HIP 66255 |
9.92 |
| 2026-04-14 00:00 |
13:34:15.38 |
-40:00:45.0 |
HIP 66171 |
6.63 |
| 2026-04-14 12:00 |
13:33:45.49 |
-39:56:47.7 |
HIP 66171 |
0.44 |
| 2026-04-15 00:00 |
13:33:15.65 |
-39:52:48.6 |
HIP 66101 |
6.22 |
| 2026-04-15 12:00 |
13:32:45.85 |
-39:48:47.6 |
HIP 66101 |
9.96 |
| 2026-04-16 00:00 |
13:32:16.11 |
-39:44:44.9 |
HIP 66101 |
16.06 |