- ID:
- ivo://nao.ua/NAO
- Title:
- Nikolaev Astronomical Observatory
- Short Name:
- NAO
- Date:
- 17 Jun 2019 14:56:33
- Publisher:
- Nikolaev Astronomical Observatory
- Description:
- NAO is one of the oldest observatories in Eastern Europe. It was founded in 1821 as a Naval Observatory. In 1912 it became Nikolaev department of Pulkovo Astronomical Observatory. In 1992 it became an independent research institution in Ukraine, and it has become Research Institute since 2002. At present the Observatory is subordinated to the State Committee for Science, Innovation and Information. The Observatory is located in the central part of Nikolaev at an altitude of 52m above sea level. The geographic coordinates are longitude 31o58' E, and latitude 46o58' N.
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- ID:
- ivo://nao.ua/catalogs/mars
- Title:
- Positions of Mars obtained in Nikolaev Astronomical Observatory
- Short Name:
- Mars_pos
- Date:
- 05 Dec 2018 17:51:36
- Publisher:
- Nikolaev Astronomical Observatory
- Description:
- Observations of Mars were carried out with the Zonal Astrograph at Nikolaev Astronomical Observatory. The mean period of observations in opposition was 156 days. The orbits of Mars and Earth were covered 7.3 and 3.8 times respectively. After defining more exactly some computational elements and the planet's phase, 441 positions were obtained in ICRS system. Coordinates of reference stars were taken from Hipparcos and Tycho catalogues, and their proper motions were taken from the ACTRC catalogue. The standard errors in right ascension and declination are ±0."21 and ±0."22 respectively, in accordance with accuracy estimations of the Institute of Applied Astronomy of the Russian Academy of Science. These standard errors are the best among all known photographic observations of Mars. Topocentric right ascension, declination in ICRS system (J2000.0), and Julian Days (UTC) are given in the table.
- ID:
- ivo://nao.ua/scs/XPM
- Title:
- XPM catalogue containing absolute proper motions for more then 280 million stars (J2000, epoch 2000.0)
- Short Name:
- XPM_ConeSearch
- Date:
- 17 Jun 2019 14:54:24
- Publisher:
- Nikolaev Astronomical Observatory
- Description:
- We combined data from 2MASS and USNO-A2.0 catalogues in order to derive the absolute proper motions of about 314 million stars distributed all over the sky without gaps in the V magnitude range 10 mag to 20 mag. The proper motions were derived from 2MASS Point Sources and USNO-A2.0 catalogue positions, with the mean epoch difference of about 45 years for the northern hemisphere, and about 17 years for the southern one. Most of the systematic zonal errors inherent in the USNO-A2.0 catalogue were eliminated before calculation of the proper motions. The zero-point of the absolute proper motion frame (the absolute calibration) was specified with the use of about 1.1 million of extended sources from 2MASS and USNO-A2.0. In fields covering the zone of avoidance or those that contain fewer than 25 galaxies, quasi-absolute calibration was performed. The mean formal error of absolute calibration is less than 1 mas/yr. The catalogue contains ICRS positions of stars at 2000.0 epoch, original absolute proper motions, as well as F, J, V, N magnitudes from GSC2.3; B, R magnitudes from USNO-A2.0 and J, H, Ks magnitudes from 2MASS.
