1091 Spiraea

1091 Spiraea
Discovery[1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date26 February 1928
Designations
(1091) Spiraea
Pronunciation/spaɪˈriːə/[2]
Named after
Spiraea
(genus of shrubs)[3]
1928 DT · 1934 CN1
1938 UR · 1964 XH
main-belt · (outer)[1][4]
Cybele · background[5]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc89.27 yr (32,606 days)
Aphelion3.6484 AU
Perihelion3.2077 AU
3.4281 AU
Eccentricity0.0643
6.35 yr (2,318 days)
110.37°
0° 9m 19.08s / day
Inclination1.1554°
80.790°
12.062°
Physical characteristics
Dimensions32.78 km (calculated)[4]
35.178±0.108 km[6]
39.92±17.85 km[7]
40.280±0.455 km[8]
40.52±0.91 km[9]
7.01±0.43 h[10]
0.05±0.06[7]
0.057 (assumed)[4]
0.0627±0.0106[8]
0.063±0.003[9]
0.091±0.025[6]
C (assumed)[4]
10.60[8][9] · 10.70±0.08 (R)[10] · 10.8[1] · 11.00±0.14[11] · 11.15[4] · 11.18[7]

1091 Spiraea, provisional designation 1928 DT, is a carbonaceous Cybele asteroid from the outer regions of the asteroid belt, approximately 36 kilometers in diameter. It was discovered on 26 February 1928, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.[12] The asteroid was named after Spiraea, a genus of plants.[3]

  1. ^ a b c d Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ "spiræa". 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 d e Cite error: The named reference lcdb 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 Cite error: The named reference Masiero-2014 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Nugent-2016 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Chang-2016 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference MPC-object was invoked but never defined (see the help page).