A revised rotation period FO the asteroid 164 Eva

Details A revised rotation period FO the asteroid 164 Eva A revised rotation period FO the asteroid 164 Eva

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26as...48...57s&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 48, April 1982, p. 57-62. Sponsorship: Fonds zur Foerderung

Astronomy and Astrophysics

Astronomy

2

Asteroids, Astronomical Photometry, Planetary Rotation, Electrophotometry, Light Curve, Asteroids, 164 Eva Asteroid, Rotation, Period, Photometric Observations, Light Curves, Photometry, Comparisons, Astronomy, Absolute Magnitude, Data

Scientific paper

The asteroid 164 Eva was observed photoelectrically at CTIO, Chile, during its September 1979 opposition. A new rotation period of P = 13h.66 ± 0h.01 (= 0d.569 ± 0d.001) was derived with a completely observed double wave lightcurve and a maximum light variation of Δm = 0m.36. This is exactly half of the period obtained by Schober et al. (1977) with P = 27h.3 ? and Δm ≥ 0m.07 from earlier observations in 1975, when a more pole-on view to the rotational pole of 164 Eva was evident.
Using a phase coefficient of 0.039 mag/deg absolute magnitudes barV(1,0) = 9.06 and V0(1,0) = 8.88 were computed the colors B-V = 0.69 and U-B = 0.35 are in agreement with those listed in Bowell et al. (1979).

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