FACTOID # 179: Japan has more road than Canada.
 
 Home   Encyclopedia   Statistics   Countries A-Z   Flags   Maps   Education   Forum   FAQ   About 
 
 
 
WHAT'S NEW
RECENT ARTICLES
More Recent Articles »
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > 1997 XR2

1997 XR2 (also written 1997 XR2) is an asteroid discovered in 1997. It has a diameter of 0.1-0.3 km and an estimated mass on the order of 1010 kilograms. In ancient times, only the Sun and Moon, a few hundred stars and the most easily visible planets had names. ... 253 Mathilde, a C-type asteroid. ... For the band, see 1997 (band). ... (Redirected from 1 E10 kg) Categories: Orders of magnitude (mass) ...


From early 2002 to February 24, 2006, 1997 XR2 was considered to have about a 1 in 10,000 chance of colliding with Earth on June 1, 2101, based on 144 observations going back to December of 1997. Also see: 2002 (number). ... is the 55th day of the year in the Gregorian calendar. ... Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... This article is about Earth as a planet. ... is the 152nd day of the year (153rd in leap years) in the Gregorian calendar. ... 2101 can refer to either: The year in the 2100s decade. ... For the band, see 1997 (band). ...


It was ranked a one on the Torino Scale of impact risk, and was the only NEO to be ranked higher than zero (the scale is 0–10) until it was joined by 2004 VD17 at level one in November 2004, and then when 99942 Apophis (then known only by its provisional designation 2004 MN4) was temporarily assessed at level four in December 2004. Currently 2004 VD17 and 99942 Apophis are rated at level zero (as of February 2007). The Torino Scale is a method for categorizing the impact hazard associated with near-Earth objects (NEOs) such as asteroids and comets. ... Look up neo in Wiktionary, the free dictionary. ... 2004 VD17 (also written 2004 VD17) is a near-Earth asteroid with a low but non-zero probability of impacting Earth in 2102. ... Year 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... Close approach of Apophis on April 13, 2029 The white bar indicates uncertainty in the range of positions 99942 Apophis (99942) Apophis (previously known by its provisional designation 2004 MN4) is a near-Earth asteroid that caused a brief period of concern in December 2004 because initial observations indicated a... The provisional designation of comets and asteroids are similar to each other: they both follow a pattern set in 1925 by the Minor Planet Center of the IAU. Historical designations At first, astronomers strove to assign symbols to the minor planets: 1 Ceres a stylized sickle 2 Pallas a lozenge... Year 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... 2004 VD17 (also written 2004 VD17) is a near-Earth asteroid with a low but non-zero probability of impacting Earth in 2102. ...


On February 24, 2006, 1997 XR2 was observed by the Mt. Lemmon Survey after being lost for more than 8 years. The refinement of its orbit eliminated the possibility of impact in 2101. is the 55th day of the year in the Gregorian calendar. ... Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... Catalina Sky Survey is a project to discover comets and asteroids, and to search for near_earth objects. ...


References

  • NASA Near Earth Object Program. "Current Impact Risks" http://neo.jpl.nasa.gov/risk/ (accessed 30 Sep. 2005).
  • Ibid. "1997 XR2 Earth Impact Risk Summary" (29 May 2002). http://neo.jpl.nasa.gov/risk/1997xr2.html (accessed 3 Apr. 2004).
  • Asteroid/Comet Connection. "Consolidated Risk Tables" http://www.hohmanntransfer.com/crt.htm#news (accessed 25 Feb. 2006).
v • d • e
Small Solar System bodies

Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc objects • Oort cloud) A Small Solar System Body (SSSB) is a term defined in 2006 by the International Astronomical Union to describe objects in the Solar System that are neither planets nor dwarf planets: [1] This encompasses: all minor planets apart from the dwarf planets, : the classical asteroids, (except for 1 Ceres, the... Vulcanoids are hypothetical asteroids that may orbit in a dynamically stable zone between 0. ... The Apollo Asteroid 6489 golevka Near-Earth asteroids (NEAs) are asteroids whose orbits are close to Earths orbit. ... For other uses, see Asteroid (disambiguation). ... Image of the Trojan asteroids in front of and behind Jupiter along its orbital path. ... The centaurs are a class of icy planetoids that orbit the Sun between Jupiter and Neptune, named after the mythical race of centaurs. ... Damocloids are asteroids such as 5335 Damocles and 1996 PW that have Halley family or long-period highly eccentric orbits typical of periodic comets such as Comet Halley, but without showing a cometary coma or tail. ... Comet Hale-Bopp Comet West For other uses, see Comet (disambiguation). ... A trans-Neptunian object (TNO) is any object in the solar system that orbits the sun at a greater distance on average than Neptune. ... The Kuiper belt, derived from data from the Minor Planet Center. ... A scattered disk object (or scattered disc object or SDO) is a trans-Neptunian object of the Kuiper belt with a very eccentric orbit. ... This image is an artists rendering of the Oort cloud and the Kuiper Belt. ...

For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons, meteoroids and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names. 243 Ida and its moon Dactyl An asteroid moon is an asteroid that orbits another asteroid. ... “Meteor” redirects here. ... This article is about the Solar System. ... This is a list of numbered minor planets, nearly all of them asteroids, in sequential order. ... This page alphabetically lists the first thousand asteroids to be numbered, which are mostly in the main belt. ... This is a list of named asteroids, with links to the Wikipedia articles on the people, places, characters and concepts that they are named after. ...


  Results from FactBites:
 
1997 XR2 - Definition, explanation (269 words)
1997 XR (also written 1997 XR2) is an asteroid discovered in 1997.
It is ranked a one on the Torino scale of impact risk, and was the only NEO to be ranked higher than zero (the scale is 0–10) until it was joined by 2004 VD at level one in November 2004, and then when 2004 MN was temporarily assessed at level four in December 2004.
Based on 144 observations of 1997 XR made in December of 1997, there is about a 1 in 10,000 chance that it will collide with Earth on June 1, 2101.
1997 XR2 Information (191 words)
1997 XR (also written 1997 XR2) is an asteroid discovered in 1997.
From early 2002 to February 24, 2006, XR2 was considered to have an about 1 in 10,000 chance of colliding with Earth on June 1, 2101, based on 144 observations of made in December of 1997.
On February 24, 2006, 1997 XR was observed by Mt.
  More results at FactBites »


 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

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, 1022, m