2003 BD44
Discovered on January 30, 2003 by LONEOS, Anderson Mesa. Included in the list of the "Potentially Hazardous Asteroids" of the Minor Planet Center.
Orbital and Physical Characteristics
| Epoch | 2018 Mar 23 |
| Mean Anomaly | 105.73179° |
| Argument of Perihelion | 89.21007° |
| Longitude of Ascending Node | 181.31546° |
| Inclination | 2.66262° |
| Eccentricity | 0.6062637 |
| Semimajor Axis | 1.9682141 AU |
| Orbital Period | 2.76 years |
MOID |
0.017872 AU |
| Orbit type | Apollo |
| Absolute Magnitude | 16.89 |
| Diameter | ~1400 m |
| Rotation period | 78.64 h [1] |
Close Approach to the Earth
| Date of encounter | 2017 Apr 18 |
| Distance | 0.0557 AU (21.7 lunar distances) |
Observation Schedule
| Date | Window, UT | Receiver |
Transmitter |
Frequency, MHz |
λ, cm |
Ptx, kW |
R, au |
RTT, sec |
SNR/RTT |
|---|---|---|---|---|---|---|---|---|---|
| 2017 Apr 18-19 | 22:30 - 01:13 | RT-32 (Sv) | DSS-14 [2] | 8560.0 | 3.5 | 400 | 0.056 | 56 | 10 |
| 00:02 - 01:13 | RT-32 (Bd) | ||||||||
| 22:30 - 23:00 | DSS-55 [3] | ||||||||
| 2017 Apr 19-20 | 19:50 - 01:07 | RT-32 (Sv) | DSS-14 [2] | 8560.0 | 3.5 | 400 | 0.057 | 57 | 9 |
| 19:50 - 21:42 | RT-32 (Zc) | ||||||||
| 23:46 - 01:17 | RT-32 (Bd) |
Echo power spectrum
Continuous wave echo power spectra of 2003 BD44 obtained during bistatic observations DSS-14/DSS-55 on April 18, 2017 from 22:40 to 23:00 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 DSS-14/RT-32 continuous wave echo power spectra of 2003 BD44 obtained at Zelenchukskaya observatory on April 19, 2017 from 20:00 to 20:20 UT.
Remarks
Warner, B. et al., 2009.
We thank L. A. Benner, S. Naidu, M. Brozovic and the technical staff at Goldstone for the help with the radar observations.
We thank Cristina Garcia-Miro and the technical staff at Madrid Deep Space Communications Complex for the help with the radar observations.