메타데이터
| 항목 |
값 |
| Designation |
C/2024 L5 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-03-10T09:34:28.917120Z |
| Orbit solution date (soln_date, UTC) |
2026-04-14T13:42:18Z |
| Obs used |
1218 |
| NEO |
- |
| M1 |
5.500 |
| K1 |
15.500 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2024-06-14T22:40:01.257600Z |
| Discovery magnitude (MPC) |
17.68 o |
| Discovery observatory (MPC) |
M22 · ATLAS South Africa, Sutherland |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2025-04-26.0000000 |
| e |
1.03719810 |
| q (au) |
3.432407 |
| a (au) |
-92.273697 |
| i (deg) |
166.573102 |
| Ω (om, deg) |
139.176328 |
| ω (w, deg) |
290.514693 |
| M (ma, deg) |
0.051818 |
밝기
산란 + 전체 선형
$$
M_a = (5.290 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.290 |
| n |
6.000 |
| gf |
0.816 |
| gb |
-0.957 |
| k |
1.000 |
| δ90 |
1.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
08:54:33.03 |
+18:59:37.0 |
HIP 43642 |
26.10 |
| 2026-07-29 12:00 |
08:54:43.16 |
+18:59:25.4 |
HIP 43642 |
27.86 |
| 2026-07-30 00:00 |
08:54:53.28 |
+18:59:13.7 |
HIP 43642 |
29.71 |
| 2026-07-30 12:00 |
08:55:03.41 |
+18:59:02.0 |
HIP 43642 |
31.64 |
| 2026-07-31 00:00 |
08:55:13.53 |
+18:58:50.3 |
HIP 43642 |
33.63 |
| 2026-07-31 12:00 |
08:55:23.66 |
+18:58:38.7 |
HIP 43642 |
35.67 |
| 2026-08-01 00:00 |
08:55:33.78 |
+18:58:27.0 |
HIP 43642 |
37.75 |
| 2026-08-01 12:00 |
08:55:43.89 |
+18:58:15.3 |
HIP 44022 |
36.27 |
| 2026-08-02 00:00 |
08:55:54.00 |
+18:58:03.6 |
HIP 44022 |
34.35 |
| 2026-08-02 12:00 |
08:56:04.11 |
+18:57:52.0 |
HIP 44022 |
32.51 |
| 2026-08-03 00:00 |
08:56:14.21 |
+18:57:40.3 |
HIP 44022 |
30.73 |
| 2026-08-03 12:00 |
08:56:24.31 |
+18:57:28.7 |
HIP 44022 |
29.05 |
| 2026-08-04 00:00 |
08:56:34.40 |
+18:57:17.2 |
HIP 44022 |
27.48 |
| 2026-08-04 12:00 |
08:56:44.47 |
+18:57:05.6 |
HIP 44022 |
26.03 |
| 2026-08-05 00:00 |
08:56:54.54 |
+18:56:54.1 |
HIP 44022 |
24.72 |
| 2026-08-05 12:00 |
08:57:04.60 |
+18:56:42.6 |
HIP 44022 |
23.59 |
| 2026-08-06 00:00 |
08:57:14.65 |
+18:56:31.2 |
HIP 44022 |
22.66 |
| 2026-08-06 12:00 |
08:57:24.69 |
+18:56:19.8 |
HIP 44090 |
20.36 |
| 2026-08-07 00:00 |
08:57:34.71 |
+18:56:08.5 |
HIP 44090 |
18.05 |
| 2026-08-07 12:00 |
08:57:44.72 |
+18:55:57.3 |
HIP 44090 |
15.76 |
| 2026-08-08 00:00 |
08:57:54.71 |
+18:55:46.1 |
HIP 44090 |
13.51 |
| 2026-08-08 12:00 |
08:58:04.69 |
+18:55:35.0 |
HIP 44090 |
11.30 |
| 2026-08-09 00:00 |
08:58:14.65 |
+18:55:23.9 |
HIP 44090 |
9.18 |
| 2026-08-09 12:00 |
08:58:24.60 |
+18:55:13.0 |
HIP 44090 |
7.22 |
| 2026-08-10 00:00 |
08:58:34.52 |
+18:55:02.1 |
HIP 44090 |
5.57 |
| 2026-08-10 12:00 |
08:58:44.43 |
+18:54:51.3 |
HIP 44090 |
4.59 |
| 2026-08-11 00:00 |
08:58:54.32 |
+18:54:40.6 |
HIP 44090 |
4.70 |
| 2026-08-11 12:00 |
08:59:04.18 |
+18:54:30.0 |
HIP 44090 |
5.84 |
| 2026-08-12 00:00 |
08:59:14.02 |
+18:54:19.5 |
HIP 44090 |
7.54 |
| 2026-08-12 12:00 |
08:59:23.84 |
+18:54:09.2 |
HIP 44090 |
9.51 |
| 2026-08-13 00:00 |
08:59:33.64 |
+18:53:58.9 |
HIP 44090 |
11.61 |
| 2026-08-13 12:00 |
08:59:43.41 |
+18:53:48.8 |
HIP 44090 |
13.77 |
| 2026-08-14 00:00 |
08:59:53.15 |
+18:53:38.8 |
HIP 44090 |
15.97 |
| 2026-08-14 12:00 |
09:00:02.86 |
+18:53:28.9 |
HIP 44090 |
18.19 |
| 2026-08-15 00:00 |
09:00:12.55 |
+18:53:19.2 |
HIP 44312 |
19.71 |
| 2026-08-15 12:00 |
09:00:22.21 |
+18:53:09.6 |
HIP 44312 |
17.79 |
| 2026-08-16 00:00 |
09:00:31.83 |
+18:53:00.2 |
HIP 44312 |
15.96 |
| 2026-08-16 12:00 |
09:00:41.43 |
+18:52:50.9 |
HIP 44312 |
14.27 |
| 2026-08-17 00:00 |
09:00:50.99 |
+18:52:41.7 |
HIP 44312 |
12.77 |
| 2026-08-17 12:00 |
09:01:00.52 |
+18:52:32.8 |
HIP 44312 |
11.52 |
| 2026-08-18 00:00 |
09:01:10.01 |
+18:52:24.0 |
HIP 44312 |
10.62 |
| 2026-08-18 12:00 |
09:01:19.47 |
+18:52:15.4 |
HIP 44312 |
10.13 |
| 2026-08-19 00:00 |
09:01:28.90 |
+18:52:07.0 |
HIP 44312 |
10.13 |