메타데이터
| 항목 |
값 |
| Designation |
C/2022 A3 (Lemmon-ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-09-28T20:10:26.535360Z |
| Orbit solution date (soln_date, UTC) |
2024-10-31T13:12:14Z |
| Obs used |
1015 |
| NEO |
- |
| M1 |
8.600 |
| K1 |
9.250 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2022-01-10T10:14:36.297600Z |
| Discovery magnitude (MPC) |
20.34 G |
| Discovery observatory (MPC) |
G96 · Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2023-02-25.0000000 |
| e |
0.99596960 |
| q (au) |
3.703462 |
| a (au) |
918.881737 |
| i (deg) |
88.348087 |
| Ω (om, deg) |
325.483203 |
| ω (w, deg) |
234.846313 |
| M (ma, deg) |
359.992363 |
밝기
산란 + 전체 선형
$$
M_a = (9.660 + 4.723\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.660 |
| n |
4.723 |
| gf |
1.000 |
| gb |
-0.731 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2021-04-30 |
2023-06-11 |
+0.7727 |
-0.638 |
| 2023-10-09 |
2024-10-29 |
-5.2480 |
+3.736 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
23:03:13.65 |
-35:49:06.5 |
HIP 114013 |
29.11 |
| 2026-05-12 12:00 |
23:03:16.88 |
-35:49:16.8 |
HIP 114013 |
28.59 |
| 2026-05-13 00:00 |
23:03:20.00 |
-35:49:27.9 |
HIP 114013 |
28.11 |
| 2026-05-13 12:00 |
23:03:22.99 |
-35:49:40.0 |
HIP 114013 |
27.66 |
| 2026-05-14 00:00 |
23:03:25.87 |
-35:49:52.9 |
HIP 114013 |
27.25 |
| 2026-05-14 12:00 |
23:03:28.63 |
-35:50:06.7 |
HIP 114013 |
26.87 |
| 2026-05-15 00:00 |
23:03:31.26 |
-35:50:21.3 |
HIP 114013 |
26.53 |
| 2026-05-15 12:00 |
23:03:33.78 |
-35:50:36.8 |
HIP 114013 |
26.23 |
| 2026-05-16 00:00 |
23:03:36.17 |
-35:50:53.2 |
HIP 114013 |
25.96 |
| 2026-05-16 12:00 |
23:03:38.45 |
-35:51:10.5 |
HIP 114013 |
25.73 |
| 2026-05-17 00:00 |
23:03:40.59 |
-35:51:28.6 |
HIP 114013 |
25.55 |
| 2026-05-17 12:00 |
23:03:42.62 |
-35:51:47.6 |
HIP 114046 |
25.24 |
| 2026-05-18 00:00 |
23:03:44.52 |
-35:52:07.4 |
HIP 114046 |
24.86 |
| 2026-05-18 12:00 |
23:03:46.30 |
-35:52:28.1 |
HIP 114046 |
24.51 |
| 2026-05-19 00:00 |
23:03:47.96 |
-35:52:49.6 |
HIP 114046 |
24.19 |
| 2026-05-19 12:00 |
23:03:49.48 |
-35:53:11.9 |
HIP 114046 |
23.91 |
| 2026-05-20 00:00 |
23:03:50.89 |
-35:53:35.1 |
HIP 114046 |
23.66 |
| 2026-05-20 12:00 |
23:03:52.16 |
-35:53:59.1 |
HIP 114046 |
23.44 |
| 2026-05-21 00:00 |
23:03:53.31 |
-35:54:23.9 |
HIP 114046 |
23.26 |
| 2026-05-21 12:00 |
23:03:54.33 |
-35:54:49.5 |
HIP 114046 |
23.11 |
| 2026-05-22 00:00 |
23:03:55.23 |
-35:55:16.0 |
HIP 114046 |
23.00 |
| 2026-05-22 12:00 |
23:03:56.00 |
-35:55:43.2 |
HIP 114046 |
22.93 |
| 2026-05-23 00:00 |
23:03:56.63 |
-35:56:11.3 |
HIP 114046 |
22.90 |
| 2026-05-23 12:00 |
23:03:57.14 |
-35:56:40.1 |
HIP 114046 |
22.90 |
| 2026-05-24 00:00 |
23:03:57.53 |
-35:57:09.7 |
HIP 114046 |
22.94 |
| 2026-05-24 12:00 |
23:03:57.78 |
-35:57:40.2 |
HIP 114046 |
23.03 |
| 2026-05-25 00:00 |
23:03:57.90 |
-35:58:11.4 |
HIP 114046 |
23.15 |
| 2026-05-25 12:00 |
23:03:57.89 |
-35:58:43.3 |
HIP 114046 |
23.31 |
| 2026-05-26 00:00 |
23:03:57.75 |
-35:59:16.0 |
HIP 114046 |
23.51 |
| 2026-05-26 12:00 |
23:03:57.48 |
-35:59:49.5 |
HIP 114046 |
23.76 |
| 2026-05-27 00:00 |
23:03:57.08 |
-36:00:23.8 |
HIP 114046 |
24.04 |
| 2026-05-27 12:00 |
23:03:56.55 |
-36:00:58.8 |
HIP 114046 |
24.36 |
| 2026-05-28 00:00 |
23:03:55.89 |
-36:01:34.5 |
HIP 114046 |
24.72 |
| 2026-05-28 12:00 |
23:03:55.09 |
-36:02:11.0 |
HIP 114046 |
25.13 |
| 2026-05-29 00:00 |
23:03:54.16 |
-36:02:48.2 |
HIP 114046 |
25.57 |
| 2026-05-29 12:00 |
23:03:53.10 |
-36:03:26.2 |
HIP 114046 |
26.04 |
| 2026-05-30 00:00 |
23:03:51.90 |
-36:04:04.8 |
HIP 113784 |
26.35 |
| 2026-05-30 12:00 |
23:03:50.57 |
-36:04:44.2 |
HIP 113784 |
25.66 |
| 2026-05-31 00:00 |
23:03:49.11 |
-36:05:24.3 |
HIP 113784 |
24.95 |
| 2026-05-31 12:00 |
23:03:47.51 |
-36:06:05.1 |
HIP 113784 |
24.22 |
| 2026-06-01 00:00 |
23:03:45.78 |
-36:06:46.6 |
HIP 113784 |
23.45 |
| 2026-06-01 12:00 |
23:03:43.91 |
-36:07:28.8 |
HIP 113784 |
22.67 |
| 2026-06-02 00:00 |
23:03:41.91 |
-36:08:11.7 |
HIP 113784 |
21.86 |