| Minorplanet: | yes |
| 4944 Kozlovskij | |
| Background: |
|
| Discovery Ref: |   |
| Discovered: | 2 September 1987 |
| Mpc Name: | (4944) Kozlovskij |
| Alt Names: | |
| Named After: | Ivan Kozlovsky  |
| Mp Category: | Witt  |
| Orbit Ref: |   |
| Epoch: | 23 March 2018 (JD 2458200.5) |
| Uncertainty: | 0 |
| Observation Arc: | 65.41 yr (23,890 d) |
| Perihelion: | 2.5733 AU |
| Semimajor: | 2.7451 AU |
| Eccentricity: | 0.0626 |
| Period: | 4.55 yr (1,661 d) |
| Mean Motion: | / day |
| Inclination: | 4.4903° |
| Asc Node: | 279.41° |
| Arg Peri: | 84.781° |
| Dimensions: | km km 9.91 km km km |
| Albedo: | 0.057 |
| Spectral Type: | SMASS = Cb C  |
| Abs Magnitude: | 12.8013.113.20 13.313.75 |
4944 Kozlovskij, provisional designation, is a carbonaceous Witt asteroid from the central regions of the asteroid belt, approximately 10km (10miles) in diameter. It was discovered on 2 September 1987, by Soviet astronomer Lyudmila Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean Peninsula. The asteroid was named for Russian opera singer Ivan Kozlovsky.
Kozlovskij is a member of the Witt family, a large family of (predominantly) stony asteroids with more than 1,600 known members. It orbits the Sun in the central main-belt at a distance of 2.6–2.9 AU once every 4 years and 7 months (1,661 days; semi-major axis of 2.75 AU). Its orbit has an eccentricity of 0.06 and an inclination of 4° with respect to the ecliptic. The asteroid's observation arc begins 36 years prior to its official discovery observation, with a precovery taken at Palomar Observatory in December 1951.
In the SMASS classification, Kozlovskij is a Cb-type asteroid, an intermediary between the carbonaceous C-type and the somewhat brighter B-type asteroids.
In October 2010, a rotational lightcurve of Kozlovskij was obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 3.573 hours with a brightness amplitude of 0.46 magnitude .
According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), Kozlovskij measures 9.25 and 9.89 kilometers in diameter and its surface has an albedo of 0.157 and 0.09, respectively. Preliminary WISE results gave a larger diameter of 10.85 and 11.125 kilometers with lower albedo of 0.086 and 0.061, respectively.
The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 9.91 kilometers based on an absolute magnitude of 13.75.
This minor planet was named after Russian opera singer Ivan Kozlovsky (1900–1993), who was a rare lyric tenor and a popular singer in the former Soviet Union. The approved naming citation was published by the Minor Planet Center on 1 September 1993 .