277 Elvira

Short description: Main-belt asteroid

277 Elvira

A three-dimensional model of 277 Elvira based on its light curve

Discovery
Discovered by| Auguste Charlois
Discovery date| 3 May 1888
Designations

MPC designation

| (277) Elvira

Alternative designations

| A888 JA
Minor planet category| Main belt (Koronis)
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc| 116.65 yr (42607 d)
|{{{apsis}}}|helion}}| 3.14812 astronomical unit|AU (470.952 Gm)
|{{{apsis}}}|helion}}| 2.62032 AU (391.994 Gm)

Semi-major axis

| 2.88422 AU (431.473 Gm)
Eccentricity| 0.091498
Orbital period| 4.90 yr (1789.1 d)
Mean anomaly| 266.399°
Mean motion| 0° 12m 4.378s / day
Inclination| 1.16250°
Longitude of ascending node| 231.271°

|{{{apsis}}}|helion}}

| 137.520°
Physical characteristics
Dimensions| 27.19±0.9 km[1]
27.19 km[2]
Rotation period| 29.69 h (1.237 d)
Geometric albedo| 0.2770±0.020[1]
0.277[2]
Absolute magnitude (H)| 9.84[1][2]

Elvira (minor planet designation: 277 Elvira) is a typical main belt asteroid and is a member of the Koronis asteroid family. It was discovered by Auguste Charlois on 3 May 1888 in Nice. (277) Elvira is possibly named for a character in Alphonse de Lamartine's Méditations poétiques (1820) and Harmonies poétiques et religieuses (1830).[3]

A group of astronomers, including Lucy D’Escoffier Crespo da Silva and Richard P. Binzel, used observations made between 1998 through 2000 to determine the spin-vector alignment of the Koronis family of asteroids, including 277 Elvira. The collaborative work resulted in the creation of 61 new individual rotation lightcurves to augment previous published observations.[4]

Measurements of the thermal inertia of 277 Elvira give a value of around 190 J m−2 K−1 s−1/2, compared to 50 for lunar regolith and 400 for coarse sand in an atmosphere.[2]

## References

1. ↑ 1.0 1.1 1.2 1.3 "277 Elvira". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=277;cad=1.
2. ↑ 2.0 2.1 2.2 2.3 Delbo', Marco; Tanga, Paolo (February 2009), "Thermal inertia of main belt asteroids smaller than 100 km from IRAS data", Planetary and Space Science 57 (2): pp. 259–265, doi:10.1016/j.pss.2008.06.015, Bibcode: 2009P&SS...57..259D.
3. ↑ Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN 3-540-00238-3.
4. ↑ Slivan, S. M., Binzel, R. P., Crespo da Silva, L. D., Kaasalainen, M., Lyndaker, M. M., Krco, M.: "Spin vectors in the Koronis family: comprehensive results from two independent analyses of 213 rotation lightcurves",Icarus, 162, 2003, pp. 285–307.

## External links

* 277 Elvira at AstDyS-2, Asteroids—Dynamic Site
* Ephemeris * Observation prediction * Orbital info * Proper elements * Observational info
* 277 Elvira at the JPL Small-Body Database
* Close approach * Discovery * Ephemeris * Orbit diagram * Orbital elements * Physical parameters

* v
* t
* e

Small Solar System bodies

Minor planets|

* Designation
* Groups
* List
* Moon
* Meanings of names

Asteroid|

* Aten asteroid
* Asteroid belt
* Family
* Jupiter trojan
* Near-Earth
* Spectral types

Distant minor planet|

* Centaur
* Damocloid
* Neptune trojan
* Trans-Neptunian object
* Detached
* Kuiper belt
* Oort cloud
* Scattered disc

Comets|

* Extinct
* Great
* Halley-type
* Hyperbolic
* Long-period
* Lost
* Main-belt
* Near-parabolic
* Periodic
* Sungrazing

Other|

* Meteoroids

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/277 Elvira. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:277_Elvira&oldid=36965"
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template