메타데이터
| 항목 |
값 |
| Designation |
C/2025 R1 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-11-23T08:00:01.362240Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T14:43:17Z |
| Obs used |
339 |
| NEO |
- |
| M1 |
13.900 |
| K1 |
10.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2025-09-03T13:15:15.955200Z |
| Discovery magnitude (MPC) |
19.35 c |
| Discovery observatory (MPC) |
T08 · ATLAS-MLO, Mauna Loa |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2025-10-02.0000000 |
| e |
0.98807690 |
| q (au) |
1.975211 |
| a (au) |
165.662572 |
| i (deg) |
110.027200 |
| Ω (om, deg) |
60.396206 |
| ω (w, deg) |
77.549167 |
| M (ma, deg) |
359.975809 |
밝기
산란 + 전체 선형
$$
M_a = (14.168 + 5.752\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.168 |
| n |
5.752 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.800 |
| 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 |
19:17:32.04 |
+22:51:55.4 |
HIP 94827 |
9.97 |
| 2026-03-26 12:00 |
19:17:10.17 |
+22:53:24.3 |
HIP 94827 |
11.20 |
| 2026-03-27 00:00 |
19:16:47.81 |
+22:54:53.6 |
HIP 94827 |
14.46 |
| 2026-03-27 12:00 |
19:16:24.96 |
+22:56:23.3 |
HIP 94827 |
18.82 |
| 2026-03-28 00:00 |
19:16:01.62 |
+22:57:53.3 |
HIP 94827 |
23.76 |
| 2026-03-28 12:00 |
19:15:37.78 |
+22:59:23.7 |
HIP 94689 |
28.05 |
| 2026-03-29 00:00 |
19:15:13.44 |
+23:00:54.3 |
HIP 94471 |
24.63 |
| 2026-03-29 12:00 |
19:14:48.60 |
+23:02:25.2 |
HIP 94471 |
18.92 |
| 2026-03-30 00:00 |
19:14:23.25 |
+23:03:56.2 |
HIP 94471 |
13.29 |
| 2026-03-30 12:00 |
19:13:57.39 |
+23:05:27.4 |
HIP 94471 |
8.18 |
| 2026-03-31 00:00 |
19:13:31.01 |
+23:06:58.6 |
HIP 94471 |
5.73 |
| 2026-03-31 12:00 |
19:13:04.12 |
+23:08:29.9 |
HIP 94471 |
8.87 |
| 2026-04-01 00:00 |
19:12:36.70 |
+23:10:01.2 |
HIP 94471 |
14.46 |
| 2026-04-01 12:00 |
19:12:08.75 |
+23:11:32.4 |
HIP 94375 |
16.68 |
| 2026-04-02 00:00 |
19:11:40.27 |
+23:13:03.5 |
HIP 94258 |
17.16 |
| 2026-04-02 12:00 |
19:11:11.26 |
+23:14:34.5 |
HIP 94258 |
14.22 |
| 2026-04-03 00:00 |
19:10:41.71 |
+23:16:05.3 |
HIP 94258 |
14.32 |
| 2026-04-03 12:00 |
19:10:11.62 |
+23:17:35.8 |
HIP 94258 |
17.54 |
| 2026-04-04 00:00 |
19:09:40.98 |
+23:19:06.0 |
HIP 94258 |
22.70 |
| 2026-04-04 12:00 |
19:09:09.79 |
+23:20:35.9 |
HIP 93939 |
23.75 |
| 2026-04-05 00:00 |
19:08:38.05 |
+23:22:05.4 |
HIP 93939 |
16.82 |
| 2026-04-05 12:00 |
19:08:05.75 |
+23:23:34.3 |
HIP 93939 |
10.54 |
| 2026-04-06 00:00 |
19:07:32.88 |
+23:25:02.8 |
HIP 93939 |
7.34 |
| 2026-04-06 12:00 |
19:06:59.45 |
+23:26:30.7 |
HIP 93939 |
10.82 |
| 2026-04-07 00:00 |
19:06:25.45 |
+23:27:58.0 |
HIP 93939 |
17.50 |
| 2026-04-07 12:00 |
19:05:50.88 |
+23:29:24.5 |
HIP 93680 |
19.21 |
| 2026-04-08 00:00 |
19:05:15.74 |
+23:30:50.3 |
HIP 93680 |
13.99 |
| 2026-04-08 12:00 |
19:04:40.01 |
+23:32:15.3 |
HIP 93680 |
12.50 |
| 2026-04-09 00:00 |
19:04:03.70 |
+23:33:39.4 |
HIP 93561 |
10.15 |
| 2026-04-09 12:00 |
19:03:26.80 |
+23:35:02.6 |
HIP 93561 |
2.74 |
| 2026-04-10 00:00 |
19:02:49.31 |
+23:36:24.7 |
HIP 93561 |
7.80 |
| 2026-04-10 12:00 |
19:02:11.23 |
+23:37:45.8 |
HIP 93561 |
16.43 |
| 2026-04-11 00:00 |
19:01:32.55 |
+23:39:05.7 |
HIP 93337 |
15.06 |
| 2026-04-11 12:00 |
19:00:53.27 |
+23:40:24.4 |
HIP 93337 |
7.61 |
| 2026-04-12 00:00 |
19:00:13.38 |
+23:41:41.8 |
HIP 93337 |
7.47 |
| 2026-04-12 12:00 |
18:59:32.89 |
+23:42:57.8 |
HIP 93337 |
15.09 |
| 2026-04-13 00:00 |
18:58:51.80 |
+23:44:12.4 |
HIP 93150 |
6.73 |
| 2026-04-13 12:00 |
18:58:10.09 |
+23:45:25.5 |
HIP 93150 |
4.92 |
| 2026-04-14 00:00 |
18:57:27.76 |
+23:46:37.1 |
HIP 93127 |
12.24 |
| 2026-04-14 12:00 |
18:56:44.82 |
+23:47:46.9 |
HIP 92919 |
18.59 |
| 2026-04-15 00:00 |
18:56:01.26 |
+23:48:55.1 |
HIP 92919 |
15.59 |
| 2026-04-15 12:00 |
18:55:17.08 |
+23:50:01.4 |
HIP 92919 |
18.52 |
| 2026-04-16 00:00 |
18:54:32.28 |
+23:51:05.8 |
HIP 92919 |
25.58 |