메타데이터
| 항목 |
값 |
| Designation |
C/2025 N2 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2024-12-11T00:44:51.385920Z |
| Orbit solution date (soln_date, UTC) |
2025-12-18T15:12:23Z |
| Obs used |
47 |
| NEO |
- |
| M1 |
4.900 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2025-07-02T01:33:05.932800Z |
| Discovery magnitude (MPC) |
19.61 c |
| Discovery observatory (MPC) |
M22 · ATLAS South Africa, Sutherland |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2025-08-26.0000000 |
| e |
1.00252212 |
| q (au) |
8.983070 |
| a (au) |
-3561.711006 |
| i (deg) |
81.665566 |
| Ω (om, deg) |
94.465158 |
| ω (w, deg) |
230.022476 |
| M (ma, deg) |
0.001196 |
밝기
산란 + 전체 선형
$$
M_a = (10.192 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.192 |
| n |
2.000 |
| gf |
0.816 |
| gb |
-0.571 |
| k |
0.896 |
| 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) |
| 2026-06-01 00:00 |
03:39:32.44 |
-70:00:05.3 |
HIP 17486 |
26.91 |
| 2026-06-01 12:00 |
03:40:16.66 |
-69:59:40.7 |
HIP 17486 |
23.17 |
| 2026-06-02 00:00 |
03:41:00.79 |
-69:59:17.0 |
HIP 17486 |
19.46 |
| 2026-06-02 12:00 |
03:41:44.83 |
-69:58:54.1 |
HIP 17486 |
15.79 |
| 2026-06-03 00:00 |
03:42:28.77 |
-69:58:32.1 |
HIP 17486 |
12.19 |
| 2026-06-03 12:00 |
03:43:12.63 |
-69:58:10.9 |
HIP 17486 |
8.75 |
| 2026-06-04 00:00 |
03:43:56.39 |
-69:57:50.5 |
HIP 17486 |
5.71 |
| 2026-06-04 12:00 |
03:44:40.06 |
-69:57:31.0 |
HIP 17486 |
4.11 |
| 2026-06-05 00:00 |
03:45:23.63 |
-69:57:12.4 |
HIP 17515 |
4.63 |
| 2026-06-05 12:00 |
03:46:07.11 |
-69:56:54.6 |
HIP 17515 |
7.20 |
| 2026-06-06 00:00 |
03:46:50.49 |
-69:56:37.6 |
HIP 17720 |
5.45 |
| 2026-06-06 12:00 |
03:47:33.78 |
-69:56:21.5 |
HIP 17720 |
3.09 |
| 2026-06-07 00:00 |
03:48:16.97 |
-69:56:06.3 |
HIP 17720 |
4.15 |
| 2026-06-07 12:00 |
03:49:00.07 |
-69:55:51.9 |
HIP 17947 |
6.43 |
| 2026-06-08 00:00 |
03:49:43.07 |
-69:55:38.3 |
HIP 17947 |
2.92 |
| 2026-06-08 12:00 |
03:50:25.97 |
-69:55:25.6 |
HIP 17947 |
1.69 |
| 2026-06-09 00:00 |
03:51:08.77 |
-69:55:13.8 |
HIP 17947 |
4.92 |
| 2026-06-09 12:00 |
03:51:51.47 |
-69:55:02.9 |
HIP 17947 |
8.51 |
| 2026-06-10 00:00 |
03:52:34.07 |
-69:54:52.8 |
HIP 17947 |
12.14 |
| 2026-06-10 12:00 |
03:53:16.57 |
-69:54:43.5 |
HIP 17947 |
15.77 |
| 2026-06-11 00:00 |
03:53:58.97 |
-69:54:35.1 |
HIP 17947 |
19.40 |
| 2026-06-11 12:00 |
03:54:41.27 |
-69:54:27.6 |
HIP 17947 |
23.02 |
| 2026-06-12 00:00 |
03:55:23.46 |
-69:54:21.0 |
HIP 18530 |
25.98 |
| 2026-06-12 12:00 |
03:56:05.55 |
-69:54:15.2 |
HIP 18530 |
24.35 |
| 2026-06-13 00:00 |
03:56:47.54 |
-69:54:10.3 |
HIP 18530 |
23.21 |
| 2026-06-13 12:00 |
03:57:29.41 |
-69:54:06.2 |
HIP 18530 |
22.61 |
| 2026-06-14 00:00 |
03:58:11.18 |
-69:54:03.1 |
HIP 18530 |
22.61 |
| 2026-06-14 12:00 |
03:58:52.85 |
-69:54:00.7 |
HIP 18530 |
23.19 |
| 2026-06-15 00:00 |
03:59:34.40 |
-69:53:59.3 |
HIP 18530 |
24.31 |
| 2026-06-15 12:00 |
04:00:15.84 |
-69:53:58.7 |
HIP 18842 |
24.92 |
| 2026-06-16 00:00 |
04:00:57.18 |
-69:53:59.0 |
HIP 18842 |
23.57 |
| 2026-06-16 12:00 |
04:01:38.40 |
-69:54:00.2 |
HIP 18842 |
22.68 |
| 2026-06-17 00:00 |
04:02:19.51 |
-69:54:02.2 |
HIP 19128 |
19.29 |
| 2026-06-17 12:00 |
04:03:00.50 |
-69:54:05.0 |
HIP 19128 |
15.79 |
| 2026-06-18 00:00 |
04:03:41.38 |
-69:54:08.8 |
HIP 19128 |
12.32 |
| 2026-06-18 12:00 |
04:04:22.15 |
-69:54:13.4 |
HIP 19128 |
8.88 |
| 2026-06-19 00:00 |
04:05:02.80 |
-69:54:18.8 |
HIP 19128 |
5.56 |
| 2026-06-19 12:00 |
04:05:43.33 |
-69:54:25.2 |
HIP 19128 |
2.72 |
| 2026-06-20 00:00 |
04:06:23.74 |
-69:54:32.3 |
HIP 19128 |
2.88 |
| 2026-06-20 12:00 |
04:07:04.04 |
-69:54:40.4 |
HIP 19128 |
5.77 |
| 2026-06-21 00:00 |
04:07:44.21 |
-69:54:49.2 |
HIP 19269 |
7.56 |
| 2026-06-21 12:00 |
04:08:24.27 |
-69:54:59.0 |
HIP 19269 |
8.35 |
| 2026-06-22 00:00 |
04:09:04.20 |
-69:55:09.5 |
HIP 19269 |
10.30 |