Seven Asteroids Studied from Modra Observatory in the Course of Binary Asteroid Photometric Campaign


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Abstract

We report lightcurves for five asteroids from the inner main belt—(1703) Barry, (2590) Mourão, (4022) Nonna, (5171) Augustesen, (23031) 1999 XX7—and for two near-Earth asteroids—(100004) 1983 VA, (144922) 2005 CK38—obtained at Modra Observatory as a part of binary asteroid photometric campaign. Estimated synodic rotational periods and amplitudes of their composite lightcurves were as follows: 107.1± 0.5 h, 0.5mag for (1703) Barry; 15.59± 0.01 h, 0.49mag for (2590) Mourão; 2.5877± 0.0005 h, 0.08mag for (4022) Nonna; 474± 10 h, 0.8mag for (5171) Augustesen; 3.075 ± 0.001 h, 0.43mag for (23031) 1999 XX7; 3.1643± 0.0009 h, 0.11mag for (100004) 1983 VA; 4.7894 ± 0.0005 h, 0.27mag for (144922) 2005 CK38. The slow rotator (5171) Augustesen and possibly also (1703) Barry appear to be tumblers, though their precession periods can not be estimated from the available data.

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