| Minorplanet: | yes |
| 2754 Efimov | |
| Background: |
|
| Discovery Ref: |   |
| Discovered: | 13 August 1966 |
| Mpc Name: | (2754) Efimov |
| Alt Names: | 1966 PD1933 WF 1966 RB |
| Orbit Ref: |   |
| Epoch: | 4 September 2017 (JD 2458000.5) |
| Uncertainty: | 0 |
| Observation Arc: | 66.15 yr (24,160 days) |
| Perihelion: | 1.7085 AU |
| Semimajor: | 2.2274 AU |
| Eccentricity: | 0.2330 |
| Period: | 3.32 yr (1,214 days) |
| Mean Motion: | / day |
| Inclination: | 5.7096° |
| Asc Node: | 275.17° |
| Arg Peri: | 91.098° |
| Satellites: | 1 |
| Dimensions: | 4.98 km |
| Rotation: | 2.44967abbr=onNaNabbr=on |
| Albedo: | 0.20 |
| Spectral Type: | SMASS = Sa S L  |
| Abs Magnitude: | 13.613.92 |
2754 Efimov, provisionally named, is a stony asteroid and binary system from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 13 August 1966, by Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. The asteroid was named after Russian aviator Mikhail Efimov.
Efimov orbits the Sun in the inner main-belt at a distance of 1.7–2.7 AU once every 3 years and 4 months (1,214 days). Its orbit has an eccentricity of 0.23 and an inclination of 6° with respect to the ecliptic.
In the SMASS classification, Efimov is a Sa-type asteroid, which belong to the larger group of S-type asteroids. It is also characterized as a L-type asteroid by PanSTARRS photometric survey.
The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 4.98 kilometers with an absolute magnitude of 13.92.
Efimov is a binary asteroid. In 2006, astronomers discovered a minor-planet moon, designated around Efimov using lightcurve observations, with a diameter of 1.29 kilometers and an orbital period of 14 hours and 46 minutes.
This minor planet named in memory of Russian aviator Mikhail Nikiforovich Efimov (ru|М. Н. Ефимов; 1881–1919), who was the first to realize steep turns and dives.
The approved naming citation was published by the Minor Planet Center on 31 May 1988 .