Mare Imbrium (Sea of Showers)
The lava plain within the Imbrium Basin on the Moon and is one of the larger craters in the Solar System. On December 14, 2013, the lunar module Chang'e 3 landed on the surface of Mare Imbrium at 44.12° N, 19.51° W.
Characteristics
| Selenographic Coordinates | 34.72° N, 14.91° W |
| Diameter | 1145.53 km |
| Depth | 12.0 km |
Radar scattering properties
SC/OC |
0.45 [1] |
| Radar albedo | 0.06 [1] |
Observation Schedule
| Date | Window, UT | Receiver |
Transmitter |
Frequency, MHz |
λ, cm |
Ptx, kW |
R, au |
RTT, sec |
SNR/RTT |
|---|---|---|---|---|---|---|---|---|---|
| 2019 Apr 26 | 02:25 - 03:35 | RT-13 (Zv) | Kashi 18-m [2] |
7209.125 | 4.2 | 0.2 | 0.0027 | 2.66 | 67800 |
| 02:30 - 03:30 | Km [2] | 52900 |
Echo power spectrum
Continuous wave echo power spectra of the lunar surface in Mare Imbrium region obtained at Zelenchukskaya observatory during bistatic observations RT-13/Kashi 18-m on April 26, 2019 from 03:00:01 to 03:00:11 UT. Solid and dashed lines denote echo power in the opposite circular (OC) and same circular (SC) polarizations as that of the transmitted wave.
Bistatic Km/Kashi 18-m continuous wave echo power spectra of the lunar surface in Mare Imbrium region obtained at Yunnan observatory on April 26, 2019 from 03:00:01 to 03:00:11 UT.
Remarks
We thank J. Sun and J. Ping and the technical staff at Yunnan and Kashi observatories for the help with the radar observations.