We report lightcurve periods for ten main-belt asteroids observed at the Evelyn L. Egan Observatory: 26 Proserpina, 78 Diana, 242 Kriemhild, 287 Nephthys, 348 May, 368 Haidea, 446 Aeternitas, 872 Holda, 905 Universitas, and 1013 Tombecka.
Photometric observations were made in 2016 April and October of the main-belt asteroids (8360) 1990 FD1 and (11386) 1998 TA18. For 1990 FD1, analysis of the data found a period of 8.094 ± 0.003 h; for 1998 TA18 a likely period of 15.943 ± 0.003 h was found.
566 positions and photometric observa- tions of NEO objects 2006 VB14 = Y5705 = 345705 and 1986 DA were obtained with Baldone Schmidt telescope in 2018 and 2019, to detecting rotation period and other physical characteristics. A Fourier transform was applied to determine the rotation period for asteroid 1986 DA=6178. Value 3.12 ± 0.02h was obtained...
New photometric observations of Ennomos were performed, the magnitude-phase relation was obtained, and its absolute magnitude was determined. Using the mean occultation diameter and value of absolute magnitude, Ennomos albedo was found equal to 0.05.
Photometric observations of the main-belt asteroid 2409 Chapman were conducted in order to determine its rotation period. We found P = 3.1534 ± 0.0006 h, A = 0.14 ± 0.01 mag as the synodic period and lightcurve amplitude for this asteroid.
... Aeternitas was observed during six nights in 2009 April for a duration of ~25 hours (Table 1). 446 Aeternitas has previously reported rotational periods of 15.85 ± 0.01 h (Florczak et al., 1997), 15.736 ± 0.001 h (Fauerbach et al., 2008), and 15.7413 ± 0.0004 h . Our result is in excellent agreement with the latter two periods and we present the lightcurve of 446 Aeternitas with the best-fit period of 15.740 ± 0.003 h with an amplitude of ~ 0.40 mag. ...
We report lightcurve rotational periods for five taxonomic A-class asteroids observed at the Evelyn L. Egan Observatory: 246 Asporina, 289 Nenetta, 446 Aeternitas, 1600 Vyssotsky, and the Mars-crosser 1951 Lick.
This paper presents new photometric CCD observations of the asteroids 55 Pandora, 78 Diana and 815 Coppelia with the 50/70 cm Schmidt telescope at Rozhen National Astronomical Observatory during October-November 2010. The rotation periods and amplitudes of light variations of the observed asteroids were determined from the light curves.