1244 Deira

1244 Deira
Modelled shape of Deira from its lightcurve
Discovery[1]
Discovered byC. Jackson
Discovery siteJohannesburg Obs.
Discovery date25 May 1932
Designations
(1244) Deira
Pronunciation/ˈdaɪərə/ or /ˈdɛərə/[2]
Named after
Deira, near the town of Ossett, England[3]
(alt. Celtic Kingdom of Deira)
1932 KE · 1930 YR
1984 YQ6 · A908 TD
A921 GC · A924 BH
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc109.13 yr (39,861 days)
Aphelion2.5731 AU
Perihelion2.1129 AU
2.3430 AU
Eccentricity0.0982
3.59 yr (1,310 days)
335.23°
0° 16m 29.28s / day
Inclination8.6950°
277.12°
261.45°
Physical characteristics
28.816±0.546 km[7]
30.432±9.136 km[8]
30.95±1.9 km[9]
31.799±0.487 km[10]
32.28±0.35 km[11]
33.15±7.01 km[12]
35.19±0.19 km[13]
5 (poor) h[14]
210.6±0.1 h[a]
216.98±0.05 h[15]
217.1±0.1 h[b]
  • (314.0°, −46.0°) (λ1/β1)[6]
  • (107.0°, −56.0°) (λ2/β2)[6]
0.03±0.00[13]
0.0357±0.0051[10]
0.037±0.011[12]
0.0416±0.0312[8]
0.052±0.001[11]
0.0557±0.007[9]
11.30[9][10][11]
11.50[1][17][8]

1244 Deira (prov. designation: 1932 KE) is a dark background asteroid and slow rotator from the inner region of the asteroid belt. The X-type asteroid has an exceptionally long rotation period of 210.6 hours and measures approximately 31 kilometers (19 miles) in diameter. It was discovered on 25 May 1932, by English-born South African astronomer Cyril Jackson at the Union Observatory in Johannesburg,[4] who named it after Deira, an old kingdom near his birthplace, the market town of Ossett, located in West Yorkshire, England.[3]

  1. ^ a b c d Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ A Complete Pronouncing Gazetteer, Or, Geographical Dictionary of the World, 1880
  3. ^ a b Cite error: The named reference springer was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference AstDys-object was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Ferret was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Masiero-2011 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Masiero-2017 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference SIMPS was invoked but never defined (see the help page).
  10. ^ a b c d Cite error: The named reference WISE was invoked but never defined (see the help page).
  11. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference Nugent-2015 was invoked but never defined (see the help page).
  13. ^ a b Cite error: The named reference Nugent-2016 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference geneva-obs was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Hanus-2016a was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference Lazzaro-2004 was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference lcdb was invoked but never defined (see the help page).


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