| Discovery[1] | |
|---|---|
| Discovered by | V. Albitzkij |
| Discovery site | Simeiz Obs. |
| Discovery date | 5 October 1923 |
| Designations | |
| (1007) Pawlowia | |
Named after | Ivan Pavlov[2] (Russian physiologist) |
| 1923 OX · 1934 FE 1954 UG1 · 1956 AK | |
| main-belt · (middle) background[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 110.93 yr (40,516 days) |
| Aphelion | 3.0098AU |
| Perihelion | 2.4048 AU |
| 2.7073 AU | |
| Eccentricity | 0.1117 |
| 4.45yr (1,627 days) | |
| 25.348° | |
| 0° 13m 16.68s / day | |
| Inclination | 2.5423° |
| 307.12° | |
| 77.226° | |
| Physical characteristics | |
| Dimensions | 18.264±0.090 km[4] 19.263±0.062 km[5] 20.47±7.78 km[6] 20.83±5.50 km[7] 24.13±0.47 km[8] 32.03 km(calculated)[9] |
| 8.23h[10] | |
| 0.057(assumed)[9] 0.080±0.004[8] 0.11±0.06[6] 0.11±0.08[7] 0.1200±0.0233[5] 0.145±0.012[4] | |
| SMASS =K[1][9] | |
| 11.20[6][9] · 11.3[1] · 11.39[7] · 11.50[5][8] | |
Pawlowia (minor planet designation:1007 Pawlowia), provisional designation1923 OX, is a backgroundasteroid from the central regions of theasteroid belt, approximately 20 kilometers in diameter. It was discovered on 5 October 1923, by Soviet astronomerVladimir Albitsky at theSimeiz Observatory on the Crimean peninsula.[11] The asteroid was named after Russian physiologist and NobelistIvan Pavlov.[2]
Pawlowia is a non-family asteroid from the main belt'sbackground population.[3] It orbits the Sun in thecentral asteroid belt at a distance of 2.4–3.0 AU once every 4 years and 5 months (1,627 days;semi-major axis of 2.71 AU). Its orbit has aneccentricity of 0.11 and aninclination of 3° with respect to theecliptic.[1]
The asteroid was first imaged on aprecovery taken atLowell Observatory in December 1906. The body'sobservation arc begins at Simeiz on 30 October 1925, or 25 days after its official discovery observation (discovery record not listed).[11]
In theSMASS classification,Pawlowia is aK-type asteroid, which are common among members of theEos family and known for their intermediatealbedo.[1]
In September 2003, a tentative rotationallightcurve ofPawlowia was obtained from photometric observations by American Maurice Clark at the Bucknell andRosemary Hill Observatory in Pennsylvania and Florida, respectively. Analysis of the essentially flat lightcurve gave a poorly ratedrotation period of 8.23 hours with a brightness amplitude of at least 0.02magnitude (U=1).[10] As of 2018, no secure period has been obtained.[9]
According to the surveys carried out by the JapaneseAkari satellite and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Pawlowia measures between 18.264 and 24.13 kilometers in diameter and its surface has analbedo between 0.080 and 0.145.[4][5][6][7][8]
TheCollaborative Asteroid Lightcurve Link assumes a standard albedo forcarbonaceous asteroids of 0.057 and consequently calculates a much larger diameter of 32.03 kilometers based on anabsolute magnitude of 11.2.[9]
Thisminor planet was named after Russian biologistIvan Pavlov (1849–1936), who was awarded theNobel Prize in Physiology or Medicine in 1904(seelist of laureates). Pavlov is best known for his research onclassical conditioning (Pavlov's dog).[2]
The official naming citation was mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 96). The lunar craterPavlov was also named in his honor.[2]
