메타데이터
| 항목 |
값 |
| Designation |
C/2022 W2 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-03-08T16:29:49.200000Z |
| Orbit solution date (soln_date, UTC) |
2024-03-12T13:12:41Z |
| Obs used |
250 |
| NEO |
- |
| M1 |
7.700 |
| K1 |
17.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-11-24T05:40:11.481600Z |
| Discovery magnitude (MPC) |
19.14 o |
| Discovery observatory (MPC) |
T05 · ATLAS-HKO, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2023-01-17.0000000 |
| e |
0.99064934 |
| q (au) |
3.122791 |
| a (au) |
333.964717 |
| i (deg) |
63.532535 |
| Ω (om, deg) |
320.448256 |
| ω (w, deg) |
123.259626 |
| M (ma, deg) |
359.991814 |
밝기
산란 + 전체 선형
$$
M_a = (7.924 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.924 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
09:36:51.43 |
-39:15:53.2 |
HIP 47333 |
22.89 |
| 2026-05-12 12:00 |
09:36:52.00 |
-39:14:12.8 |
HIP 47333 |
23.38 |
| 2026-05-13 00:00 |
09:36:52.69 |
-39:12:32.8 |
HIP 47333 |
23.95 |
| 2026-05-13 12:00 |
09:36:53.52 |
-39:10:53.3 |
HIP 47333 |
24.60 |
| 2026-05-14 00:00 |
09:36:54.46 |
-39:09:14.3 |
HIP 47333 |
25.31 |
| 2026-05-14 12:00 |
09:36:55.53 |
-39:07:35.7 |
HIP 47200 |
26.07 |
| 2026-05-15 00:00 |
09:36:56.73 |
-39:05:57.7 |
HIP 47200 |
24.42 |
| 2026-05-15 12:00 |
09:36:58.05 |
-39:04:20.1 |
HIP 47200 |
22.78 |
| 2026-05-16 00:00 |
09:36:59.49 |
-39:02:43.1 |
HIP 47200 |
21.14 |
| 2026-05-16 12:00 |
09:37:01.05 |
-39:01:06.6 |
HIP 47200 |
19.51 |
| 2026-05-17 00:00 |
09:37:02.74 |
-38:59:30.6 |
HIP 47200 |
17.89 |
| 2026-05-17 12:00 |
09:37:04.55 |
-38:57:55.2 |
HIP 47200 |
16.28 |
| 2026-05-18 00:00 |
09:37:06.48 |
-38:56:20.3 |
HIP 47200 |
14.68 |
| 2026-05-18 12:00 |
09:37:08.52 |
-38:54:46.0 |
HIP 47200 |
13.09 |
| 2026-05-19 00:00 |
09:37:10.69 |
-38:53:12.2 |
HIP 47200 |
11.53 |
| 2026-05-19 12:00 |
09:37:12.98 |
-38:51:39.1 |
HIP 47200 |
9.99 |
| 2026-05-20 00:00 |
09:37:15.39 |
-38:50:06.6 |
HIP 47200 |
8.50 |
| 2026-05-20 12:00 |
09:37:17.91 |
-38:48:34.6 |
HIP 47200 |
7.07 |
| 2026-05-21 00:00 |
09:37:20.55 |
-38:47:03.3 |
HIP 47200 |
5.75 |
| 2026-05-21 12:00 |
09:37:23.31 |
-38:45:32.5 |
HIP 47200 |
4.65 |
| 2026-05-22 00:00 |
09:37:26.18 |
-38:44:02.5 |
HIP 47200 |
3.93 |
| 2026-05-22 12:00 |
09:37:29.17 |
-38:42:33.0 |
HIP 47200 |
3.83 |
| 2026-05-23 00:00 |
09:37:32.27 |
-38:41:04.2 |
HIP 47200 |
4.37 |
| 2026-05-23 12:00 |
09:37:35.48 |
-38:39:36.0 |
HIP 47200 |
5.38 |
| 2026-05-24 00:00 |
09:37:38.81 |
-38:38:08.5 |
HIP 47200 |
6.63 |
| 2026-05-24 12:00 |
09:37:42.25 |
-38:36:41.7 |
HIP 47200 |
8.02 |
| 2026-05-25 00:00 |
09:37:45.81 |
-38:35:15.5 |
HIP 47200 |
9.48 |
| 2026-05-25 12:00 |
09:37:49.47 |
-38:33:50.0 |
HIP 47200 |
10.99 |
| 2026-05-26 00:00 |
09:37:53.25 |
-38:32:25.2 |
HIP 47200 |
12.52 |
| 2026-05-26 12:00 |
09:37:57.13 |
-38:31:01.0 |
HIP 47200 |
14.08 |
| 2026-05-27 00:00 |
09:38:01.12 |
-38:29:37.6 |
HIP 47200 |
15.64 |
| 2026-05-27 12:00 |
09:38:05.22 |
-38:28:14.9 |
HIP 47200 |
17.22 |
| 2026-05-28 00:00 |
09:38:09.43 |
-38:26:52.8 |
HIP 47200 |
18.80 |
| 2026-05-28 12:00 |
09:38:13.75 |
-38:25:31.5 |
HIP 47200 |
20.39 |
| 2026-05-29 00:00 |
09:38:18.17 |
-38:24:10.9 |
HIP 47200 |
21.98 |
| 2026-05-29 12:00 |
09:38:22.70 |
-38:22:51.1 |
HIP 47200 |
23.58 |
| 2026-05-30 00:00 |
09:38:27.33 |
-38:21:31.9 |
HIP 47200 |
25.18 |
| 2026-05-30 12:00 |
09:38:32.07 |
-38:20:13.5 |
HIP 47200 |
26.78 |
| 2026-05-31 00:00 |
09:38:36.91 |
-38:18:55.9 |
HIP 47200 |
28.39 |
| 2026-05-31 12:00 |
09:38:41.86 |
-38:17:39.0 |
HIP 47251 |
29.31 |
| 2026-06-01 00:00 |
09:38:46.90 |
-38:16:22.8 |
HIP 47251 |
28.47 |
| 2026-06-01 12:00 |
09:38:52.05 |
-38:15:07.4 |
HIP 47251 |
27.72 |
| 2026-06-02 00:00 |
09:38:57.30 |
-38:13:52.8 |
HIP 47251 |
27.07 |