 Chinmoy imaged in November 2015 | |
| Discovery[1] | |
|---|---|
| Discovered by | N. Chernykh |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 12 September 1978 |
| Designations | |
| (4429) Chinmoy | |
Named after | Sri Chinmoy[1] (Indian spiritual leader) |
| 1978 RJ2 · 1978 RN1 1978 RR4 · 1980 FP2 1980 FX6 · 1987 DL2 | |
| main-belt[1][2] · (inner) Nysa[3] | |
| Orbital characteristics[2] | |
| Epoch 05 May 2025 (JD 2460800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 70.27yr (25,667 d) |
| Aphelion | 2.888141253195207AU |
| Perihelion | 1.872856138062281 AU |
| 2.380498695628744 AU | |
| Eccentricity | 0.2132505086008386 |
| 3.672908624768403 yr (1341,529875196659 d) | |
| 227.6172089339865° | |
| 0° 16m 6.24s / day | |
| Inclination | 1.457653536105314° |
| 326.8470471482925° | |
| 67.97928881241477° | |
| Physical characteristics | |
| 3.498±0.959 km[4] | |
| P1= 44.99 ±0.05h P2= 50.35 ±0.08h | |
| 0.229±0.145[4] | |
| S(Nysian member)[3] | |
| 14.6[1][2] | |
4429 Chinmoy, provisional designation1978 RJ2, is a Nysianasteroid from the inner regions of theasteroid belt, approximately 3.5 kilometers (2.2 miles) in diameter. It was discovered on 12 September 1978, by Soviet astronomerNikolai Chernykh at theCrimean Astrophysical Observatory in Nauchnij, on the Crimean Peninsula.[1] The likelyS-type asteroid was named after Indian spiritual leaderSri Chinmoy.[1]
Chinmoy is a member of theNysa family (405),[3] one of the largestasteroid families and part of theNysa–Polana complex with nearly 20 thousand identified members.[5]
It orbits the Sun in theinner main-belt at a distance of 1.9–2.9 AU once every 3 years and 8 months (1,341 days;semi-major axis of 2.38 AU). Its orbit has aneccentricity of 0.21 and aninclination of 1° with respect to theecliptic.[2]
The body'sobservation arc begins with aprecovery taken atPalomar Observatory in February 1954, more than 24 years prior to its official discovery observation at Nauchnij.[1]
Chinmoy has anabsolute magnitude of 14.6.[2] While itsspectral type has not been determined, it is likely a stonyS-type asteroid based on its membership to the Nysa family and its albedo(see below).[2][3] 4429 Chinmoy appears to be in non-principal axis rotation ("tumbling") with P1= 44.99 ±0.05h main period and P2= 50.35 ±0.08h secondary period (Center for Solar System Studies Observatory, August 2022).[2]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Chinmoy measures 3.498 kilometers in diameter and its surface has analbedo of 0.229.[4]
Thisminor planet was named after Indian spiritual leaderSri Chinmoy (1931–2007).[1] The official naming citation was published by theMinor Planet Center on 25 April 1994 (M.P.C. 23351).[6]
