메타데이터
| 항목 |
값 |
| Designation |
C/2025 Y1 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2027-10-14T01:01:56.470080Z |
| Orbit solution date (soln_date, UTC) |
2026-03-31T09:42:27Z |
| Obs used |
600 |
| NEO |
- |
| M1 |
6.500 |
| K1 |
9.500 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2025-12-26T13:40:40.656000Z |
| Discovery magnitude (MPC) |
18.75 o |
| Discovery observatory (MPC) |
T05 · ATLAS-HKO, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2026-02-15.0000000 |
| e |
0.99955371 |
| q (au) |
2.601604 |
| a (au) |
5829.413091 |
| i (deg) |
14.557493 |
| Ω (om, deg) |
166.552807 |
| ω (w, deg) |
124.302937 |
| M (ma, deg) |
359.998658 |
밝기
산란 + 전체 선형
$$
M_a = (2.582 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
2.582 |
| n |
6.000 |
| gf |
0.922 |
| gb |
-0.833 |
| k |
0.996 |
| δ90 |
6.544 |
| 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 |
13:03:06.57 |
+01:38:47.1 |
HIP 63560 |
25.19 |
| 2026-03-26 12:00 |
13:02:54.43 |
+01:40:47.9 |
HIP 63560 |
23.08 |
| 2026-03-27 00:00 |
13:02:42.23 |
+01:42:48.8 |
HIP 63560 |
21.36 |
| 2026-03-27 12:00 |
13:02:29.98 |
+01:44:49.7 |
HIP 63560 |
20.17 |
| 2026-03-28 00:00 |
13:02:17.66 |
+01:46:50.6 |
HIP 63560 |
19.58 |
| 2026-03-28 12:00 |
13:02:05.29 |
+01:48:51.4 |
HIP 63560 |
19.67 |
| 2026-03-29 00:00 |
13:01:52.87 |
+01:50:52.2 |
HIP 63560 |
20.44 |
| 2026-03-29 12:00 |
13:01:40.39 |
+01:52:53.0 |
HIP 63560 |
21.81 |
| 2026-03-30 00:00 |
13:01:27.86 |
+01:54:53.7 |
HIP 63560 |
23.68 |
| 2026-03-30 12:00 |
13:01:15.29 |
+01:56:54.3 |
HIP 63560 |
25.96 |
| 2026-03-31 00:00 |
13:01:02.67 |
+01:58:54.9 |
HIP 63455 |
27.64 |
| 2026-03-31 12:00 |
13:00:50.01 |
+02:00:55.3 |
HIP 63455 |
24.41 |
| 2026-04-01 00:00 |
13:00:37.31 |
+02:02:55.6 |
HIP 63455 |
21.35 |
| 2026-04-01 12:00 |
13:00:24.56 |
+02:04:55.7 |
HIP 63455 |
18.54 |
| 2026-04-02 00:00 |
13:00:11.78 |
+02:06:55.7 |
HIP 63455 |
16.14 |
| 2026-04-02 12:00 |
12:59:58.96 |
+02:08:55.5 |
HIP 63455 |
14.33 |
| 2026-04-03 00:00 |
12:59:46.11 |
+02:10:55.1 |
HIP 63455 |
13.38 |
| 2026-04-03 12:00 |
12:59:33.23 |
+02:12:54.6 |
HIP 63455 |
13.47 |
| 2026-04-04 00:00 |
12:59:20.32 |
+02:14:53.8 |
HIP 63455 |
14.58 |
| 2026-04-04 12:00 |
12:59:07.38 |
+02:16:52.7 |
HIP 63455 |
16.52 |
| 2026-04-05 00:00 |
12:58:54.41 |
+02:18:51.4 |
HIP 63455 |
19.03 |
| 2026-04-05 12:00 |
12:58:41.42 |
+02:20:49.9 |
HIP 63455 |
21.92 |
| 2026-04-06 00:00 |
12:58:28.41 |
+02:22:48.0 |
HIP 63455 |
25.06 |
| 2026-04-06 12:00 |
12:58:15.38 |
+02:24:45.9 |
HIP 63455 |
28.36 |
| 2026-04-07 00:00 |
12:58:02.33 |
+02:26:43.5 |
HIP 63455 |
31.78 |
| 2026-04-07 12:00 |
12:57:49.27 |
+02:28:40.7 |
HIP 63455 |
35.28 |
| 2026-04-08 00:00 |
12:57:36.19 |
+02:30:37.6 |
HIP 63455 |
38.84 |
| 2026-04-08 12:00 |
12:57:23.11 |
+02:32:34.1 |
HIP 63037 |
37.28 |
| 2026-04-09 00:00 |
12:57:10.01 |
+02:34:30.2 |
HIP 63037 |
34.98 |
| 2026-04-09 12:00 |
12:56:56.91 |
+02:36:26.0 |
HIP 63037 |
32.96 |
| 2026-04-10 00:00 |
12:56:43.81 |
+02:38:21.3 |
HIP 63037 |
31.26 |
| 2026-04-10 12:00 |
12:56:30.70 |
+02:40:16.2 |
HIP 63037 |
29.95 |
| 2026-04-11 00:00 |
12:56:17.59 |
+02:42:10.7 |
HIP 63056 |
26.59 |
| 2026-04-11 12:00 |
12:56:04.49 |
+02:44:04.7 |
HIP 63056 |
23.11 |
| 2026-04-12 00:00 |
12:55:51.39 |
+02:45:58.2 |
HIP 63056 |
19.74 |
| 2026-04-12 12:00 |
12:55:38.29 |
+02:47:51.3 |
HIP 63056 |
16.56 |
| 2026-04-13 00:00 |
12:55:25.21 |
+02:49:43.8 |
HIP 63056 |
13.68 |
| 2026-04-13 12:00 |
12:55:12.13 |
+02:51:35.9 |
HIP 63056 |
11.36 |
| 2026-04-14 00:00 |
12:54:59.07 |
+02:53:27.4 |
HIP 63056 |
9.96 |
| 2026-04-14 12:00 |
12:54:46.03 |
+02:55:18.3 |
HIP 63056 |
9.88 |
| 2026-04-15 00:00 |
12:54:33.00 |
+02:57:08.7 |
HIP 63056 |
11.14 |
| 2026-04-15 12:00 |
12:54:20.00 |
+02:58:58.4 |
HIP 63056 |
13.36 |
| 2026-04-16 00:00 |
12:54:07.02 |
+03:00:47.6 |
HIP 63056 |
16.14 |