(74144) 1998 QV77

Number: 74144
Designation: 1998 QV77
First Date: 2018/02/22
Points: 101
P1: 2.48
P1 error: 0.07
Max. Ampl.: 0.61


Lightcurve obtained from SARA South Observatory , Chile. Under EURONEAR project.

Amadeo Aznar Macías and Ovidiu Vaduvescu.

(36973) 2000 SY307


Number: 36973
Designation: 2000 SY307
First Date: 2018/10/08
Points: 150
P1: 2.98
P1 error: 0.07
Max. Ampl.: 0.29


Lightcurve obtained from TAR Telescope network, Observatorio del Teide, IAC. APT Observatories Group & IAC Solar System Group

(254145) 2004 PQ73

Number: 254145
Designation: 2004 PQ73
First Date: 2018/04/03
Points: 73
P1: 3.71
P1 error: 0.74
Max. Ampl.: 0.58


Lightcurve obtained from Isaac Newton Telescope, el Roque de los Muchachos, IAC. Under EURONEAR project.

Amadeo Aznar Macías and Ovidiu Vaduvescu.

Binary asteroid discovery IAU announcement


(1344) CAUBETA
B. Christmann, Soucieu-en-Jarrest, France; P. Pravec, K. Hornoch, H.
Kucakova, and P. Kusnirak, Ondrejov Observatory; D. Pray, Sugarloaf Mountain
Observatory, South Deerfield, MA, U.S.A.; V. Benishek, Belgrade Astronomical
Observatory; R. Montaigut and A. Leroy, OPERA Observatory, France; A. Marchini,
R. Papini, and F. Salvaggio, Dipartimento di Scienze Fisiche, Della Terra e
Dell’Ambiente, University of Siena; A. Aznar Macias, Astronomia Para Todos 
Observatories Group, Spain; and M. Serra-Ricart and J. Licandro, Instituto de
Astrofisica de Canarias, report that photometric observations obtained with a
0.20-m telescope at Soucieu-en-Jarrest, a 0.65-m telescope at Ondrejov
Observatory, a 0.50-m telescope at the Sugarloaf Mountain Observatory, a
0.35-m telescope at the Sopot Observatory in Serbia, a 0.20-m telescope at
the OPERA Observatory, a 0.30-m telescope at the Astronomical Observatory of
the University of Siena, and a 0.45-m telescope at Observatorio del Teide
during Feb. 17-Mar. 26 reveal that minor planet (1344) is a binary system
with an orbital period of 42.40 ± 0.03 hr. The primary shows a period of
3.12219 ± 0.00006 hr and has a lightcurve amplitude of 0.43 mag at solar
phases 5-9 deg. Mutual eclipse/occultation events that are 0.08 to 0.16
magnitude deep indicate a lower limit on the secondary-to-primary mean-
diameter ratio of 0.27. The mean absolute magnitude in the Cousins R
photometric system is H_R = 12.79 ± 0.06, assuming the phase relation slope
parameter G = 0.24 ± 0.11.

2019 June 3 (CBET 4634) Daniel W. E. Green» [2019-06-04 07:28, Ondrejov]