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Phys. Rev. Lett. 81, 2858–2861 (1998)

Indication, from Pioneer 10/11, Galileo, and Ulysses Data, of an Apparent Anomalous, Weak, Long-Range Acceleration

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John D. Anderson1,*, Philip A. Laing2,†, Eunice L. Lau1,‡, Anthony S. Liu3,§, Michael Martin Nieto4,**, and Slava G. Turyshev1,††
1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109
2The Aerospace Corporation, 2350 E. El Segundo Boulevard, El Segundo, California 90245-4691
3Astrodynamic Sciences, 2393 Silver Ridge Avenue, Los Angeles, California 90039
4Theoretical Division (MS-B285), Los Alamos National Laboratory, University of California, Los Alamos, New Mexico 87545

Received 10 June 1998; published in the issue dated 5 October 1998

Radio metric data from the Pioneer 10/11, Galileo, and Ulysses spacecraft indicate an apparent anomalous, constant, acceleration acting on the spacecraft with a magnitude ∼8.5×10-8cm/s2, directed towards the Sun. Two independent codes and physical strategies have been used to analyze the data. A number of potential causes have been ruled out. We discuss future kinematic tests and possible origins of the signal.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.2858
DOI:
10.1103/PhysRevLett.81.2858
PACS:
04.80.Cc, 95.10.Eg, 95.55.Pe

*Electronic address: john.d.anderson@jpl.nasa.gov

†Electronic address: Philip.A.Laing@aero.org

‡Electronic address: eunice@helen.jpl.nasa.gov

§Electronic address: SZLiu@aol.com

**Electronic address: mmn@pion.lanl.gov

††Electronic address: sgt@zeus.jpl.nasa.gov

See Also

Comment: Edward M. Murphy, Prosaic Explanation for the Anomalous Accelerations Seen in Distant Spacecraft, Phys. Rev. Lett. 83, 1890 (1999).

Comment: J. I. Katz, Comment on “Indication, from Pioneer 10/11, Galileo, and Ulysses Data, of an Apparent Anomalous, Weak, Long-Range Acceleration”, Phys. Rev. Lett. 83, 1892 (1999).

Reply: John D. Anderson, Philip A. Laing, Eunice L. Lau, Anthony S. Liu, Michael Martin Nieto, and Slava G. Turyshev, Anderson et al. Reply:, Phys. Rev. Lett. 83, 1891 (1999).

Reply: John D. Anderson, Philip A. Laing, Eunice L. Lau, Anthony S. Liu, Michael Martin Nieto, and Slava G. Turyshev, Anderson et al. Reply:, Phys. Rev. Lett. 83, 1893 (1999).

 
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