12923 Zephyr

12923 Zephyr
Discovery[1]
Discovered byLONEOS
Discovery siteAnderson Mesa Stn.
Discovery date11 April 1999
Designations
(12923) Zephyr
Pronunciation/ˈzɛfər/[2]
Named after
Zephyrus[3]
(Greek mythology)
1999 GK4
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc61.75 yr (22,554 days)
Earliest precovery date21 April 1955
Aphelion2.9267 AU
Perihelion0.9964 AU
1.9615 AU
Eccentricity0.4920
2.75 yr (1,003 days)
199.23°
0° 21m 31.68s / day
Inclination5.3045°
168.21°
147.06°
Earth MOID0.0211 AU (8.2 LD)
Physical characteristics
3.891 h[a]

12923 Zephyr (prov. designation: 1999 GK4) is a stony asteroid, classified as potentially hazardous asteroid and near-Earth object of the Apollo group, approximately 2 kilometers (1.2 miles) in diameter. It was discovered on 11 April 1999, by astronomers of the Lowell Observatory Near-Earth Object Search at Anderson Mesa Station near Flagstaff, Arizona.[4] The asteroid was named after the deity Zephyrus from Greek mythology.[3]

  1. ^ a b c d e f Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ "zephyr". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  3. ^ a b Cite error: The named reference springer was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Harris-2011 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Mainzer-2011 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Pravec-2012b was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Thomas-2011b was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Thomas-2014 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference lcdb was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).


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