FACTOID # 3: Andorrans live the longest, four years longer than in neighbouring France and Spain.
 
 Home   Encyclopedia   Statistics   Countries A-Z   Flags   Maps   Education   Forum   FAQ   About 
 
WHAT'S NEW
RECENT ARTICLES
More Recent Articles »
 

FACTS & STATISTICS    Simple view

  1. Select countries to view: (hold down Control key and click to select several)

     

     

    Compare:

     

     
  1. Select fact or statistic: (* = graphable)

     

     

     

  2. (OPTIONAL) Compare to statistic: (both need to be graphable)

     

     

     

  3. View result as:

     

       
(OR) SEARCH ALL encyclopedia, stats & forums:   

Encyclopedia > 20 Massalia


20 Massalia
Discovery
Discoverer Annibale de Gasparis
Discovery Date September 19, 1852
Alternate Designations  
Category Main belt (Massalia family)
Orbital Elements
Epoch October 22, 2004 (JD 2453300.5)
Eccentricity (e) 0.143
Semi-Major Axis (a) 360.305 Gm (2.408 AU)
Perihelion (q) 308.699 Gm (2.064 AU)
Aphelion (Q) 411.911 Gm (2.753 AU)
Orbital Period (P) 1365.261 d (3.74 a)
Mean Orbital Speed 19.09 km/s
Inclination (i) 0.707°
Longitude of the
Ascending Node (Ω)		 206.530°
Argument of Perihelion (ω) 255.578°
Mean Anomaly (M) 161.641°
Physical Characteristics
Dimensions 145.5 km
Mass 4.8×1018 kg 1 (http://www.psi.edu/pds/archive/lc.html)
Density 2.7 g/cm³ 1 (http://www.psi.edu/pds/archive/lc.html)
Surface Gravity 0.0599 m/s²
Escape Velocity 0.0975 km/s
Rotation Period 0.3374 d (8.098 h) 1 (http://www.psi.edu/pds/archive/lc.html)
Spectral Class S
Absolute Magnitude 6.50
Albedo 0.210 2 (http://dorothy.as.arizona.edu/DSN/IRAS/index_iras.html)
Mean Surface Temperature ~239 K

20 Massalia is a large and fairly bright Main belt asteroid. It is also the largest member of the Massalia family of asteroids.


It was discovered by A. de Gasparis on September 19, 1852. It was found independently the next night by J. Chacornac. His discovery was announced first.


Massalia is the Latin name for Marseilles, where Chacornac made his discovery (de Gasparis was observing from Naples).


External links


... | Previous asteroid | 20 Massalia | Next asteroid | ...


The Minor Planets
Vulcanoids | Main belt | Groups and Families | Near-Earth objects | Jupiter Trojans
Centaurs | Trans-Neptunians | Damocloids | Comets | Kuiper Belt | Oort Cloud
(For other objects and regions, see: Binary asteroids, Asteroid moons and the Solar system)
(For a complete listing, see: List of asteroids)






 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments
Please enter the 5-letter protection code

Want to know more?
Search encyclopedia, statistics and forums:
 


Lesson Plans | Student Area | Student FAQ | Reviews | Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms.