Accurate CHAMP orbit predictions labelled as the PreDicted Science Orbit (PDO) are generated on a sub-daily basis by an automated processor in particular to support the operations of the ground station network of the International Laser Ranging Service (ILRS). The PDOs are derived from the so-called GPS navigation solution of the BlackJack GPS onboard receiver and additional Satellite Laser Ranging (SLR) data using dynamical models. Orbit comparisons to the CHAMP Rapid Science Orbit (RSO) show an accuracy of about 5 m in 1-D position for the observed part of the PDO. Under quiet solar and geomagnetic conditions the accuracy of the predicted part of the PDO is at the level and below of about 70 m in along-track direction for the first 12 hours. In order to compensate degraded quality in times of increased solar and geomagnetic activity appropriate updating on a sub-daily basis is required.