메타데이터
| 항목 |
값 |
| Designation |
C/2025 R1 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-11-23T08:02:10.867200Z |
| Orbit solution date (soln_date, UTC) |
2026-05-22T14:12:19Z |
| Obs used |
365 |
| NEO |
- |
| M1 |
14.100 |
| K1 |
9.250 |
| 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) |
2025-10-19.0000000 |
| e |
0.98806696 |
| q (au) |
1.975204 |
| a (au) |
165.523932 |
| i (deg) |
110.027222 |
| Ω (om, deg) |
60.396192 |
| ω (w, deg) |
77.549896 |
| M (ma, deg) |
359.983646 |
밝기
산란 + 전체 선형
$$
M_a = (13.801 + 5.145\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.801 |
| n |
5.145 |
| gf |
1.000 |
| gb |
-0.609 |
| 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) |
| 2026-06-01 00:00 |
17:09:26.90 |
+20:16:51.3 |
HIP 84006 |
12.53 |
| 2026-06-01 12:00 |
17:08:08.56 |
+20:09:54.0 |
HIP 83868 |
12.07 |
| 2026-06-02 00:00 |
17:06:50.44 |
+20:02:51.0 |
HIP 83698 |
12.71 |
| 2026-06-02 12:00 |
17:05:32.56 |
+19:55:42.4 |
HIP 83531 |
18.73 |
| 2026-06-03 00:00 |
17:04:14.94 |
+19:48:28.4 |
HIP 83490 |
5.71 |
| 2026-06-03 12:00 |
17:02:57.59 |
+19:41:09.0 |
HIP 83493 |
12.97 |
| 2026-06-04 00:00 |
17:01:40.52 |
+19:33:44.2 |
HIP 83384 |
16.01 |
| 2026-06-04 12:00 |
17:00:23.74 |
+19:26:14.3 |
HIP 83180 |
10.76 |
| 2026-06-05 00:00 |
16:59:07.28 |
+19:18:39.2 |
HIP 83180 |
21.20 |
| 2026-06-05 12:00 |
16:57:51.14 |
+19:10:59.1 |
HIP 83002 |
4.06 |
| 2026-06-06 00:00 |
16:56:35.33 |
+19:03:14.1 |
HIP 83002 |
16.09 |
| 2026-06-06 12:00 |
16:55:19.88 |
+18:55:24.2 |
HIP 82721 |
15.73 |
| 2026-06-07 00:00 |
16:54:04.78 |
+18:47:29.7 |
HIP 82712 |
5.53 |
| 2026-06-07 12:00 |
16:52:50.05 |
+18:39:30.5 |
HIP 82712 |
22.99 |
| 2026-06-08 00:00 |
16:51:35.71 |
+18:31:26.9 |
HIP 82452 |
16.15 |
| 2026-06-08 12:00 |
16:50:21.77 |
+18:23:18.8 |
HIP 82463 |
21.66 |
| 2026-06-09 00:00 |
16:49:08.23 |
+18:15:06.4 |
HIP 82276 |
7.27 |
| 2026-06-09 12:00 |
16:47:55.11 |
+18:06:49.9 |
HIP 82276 |
16.71 |
| 2026-06-10 00:00 |
16:46:42.43 |
+17:58:29.3 |
HIP 82144 |
3.08 |
| 2026-06-10 12:00 |
16:45:30.18 |
+17:50:04.7 |
HIP 82103 |
10.71 |
| 2026-06-11 00:00 |
16:44:18.38 |
+17:41:36.3 |
HIP 81978 |
7.32 |
| 2026-06-11 12:00 |
16:43:07.04 |
+17:33:04.1 |
HIP 81978 |
24.57 |
| 2026-06-12 00:00 |
16:41:56.17 |
+17:24:28.3 |
HIP 81683 |
15.15 |
| 2026-06-12 12:00 |
16:40:45.78 |
+17:15:49.0 |
HIP 81683 |
5.78 |
| 2026-06-13 00:00 |
16:39:35.88 |
+17:07:06.3 |
HIP 81537 |
11.25 |
| 2026-06-13 12:00 |
16:38:26.47 |
+16:58:20.4 |
HIP 81537 |
11.39 |
| 2026-06-14 00:00 |
16:37:17.58 |
+16:49:31.3 |
HIP 81271 |
25.92 |
| 2026-06-14 12:00 |
16:36:09.19 |
+16:40:39.1 |
HIP 81271 |
8.81 |
| 2026-06-15 00:00 |
16:35:01.33 |
+16:31:44.0 |
HIP 81271 |
13.19 |
| 2026-06-15 12:00 |
16:33:54.01 |
+16:22:46.1 |
HIP 81035 |
15.99 |
| 2026-06-16 00:00 |
16:32:47.22 |
+16:13:45.5 |
HIP 81035 |
19.19 |
| 2026-06-16 12:00 |
16:31:40.97 |
+16:04:42.4 |
HIP 80912 |
20.93 |
| 2026-06-17 00:00 |
16:30:35.28 |
+15:55:36.7 |
HIP 80912 |
31.74 |
| 2026-06-17 12:00 |
16:29:30.15 |
+15:46:28.8 |
HIP 80657 |
21.45 |
| 2026-06-18 00:00 |
16:28:25.58 |
+15:37:18.6 |
HIP 80657 |
9.00 |
| 2026-06-18 12:00 |
16:27:21.58 |
+15:28:06.4 |
HIP 80684 |
15.25 |
| 2026-06-19 00:00 |
16:26:18.15 |
+15:18:52.1 |
HIP 80532 |
13.31 |
| 2026-06-19 12:00 |
16:25:15.31 |
+15:09:36.0 |
HIP 80532 |
17.29 |
| 2026-06-20 00:00 |
16:24:13.05 |
+15:00:18.2 |
HIP 80404 |
17.10 |
| 2026-06-20 12:00 |
16:23:11.38 |
+14:50:58.7 |
HIP 80205 |
20.40 |
| 2026-06-21 00:00 |
16:22:10.31 |
+14:41:37.7 |
HIP 80205 |
8.65 |
| 2026-06-21 12:00 |
16:21:09.83 |
+14:32:15.3 |
HIP 80153 |
7.27 |
| 2026-06-22 00:00 |
16:20:09.95 |
+14:22:51.5 |
HIP 80153 |
24.30 |