(9948) 1990 QB2

(9948) 1990 QB2
Orbit of 1990 QB2 (blue), the inner planets
and Jupiter (outermost)
Discovery[1]
Discovered byH. E. Holt
Discovery sitePalomar Obs.
Discovery date22 August 1990
Designations
(9948) 1990 QB2
1990 QB2 · 1979 SJ6
1990 SQ26
main-belt[1][2] · (inner)[3]
Nysa[4]
Orbital characteristics[2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc38.43 yr (14,035 d)
Aphelion2.9012 AU
Perihelion1.8657 AU
2.3835 AU
Eccentricity0.2172
3.68 yr (1,344 d)
187.50°
0° 16m 4.08s / day
Inclination2.0964°
171.55°
151.67°
Physical characteristics
3.345±0.717 km[5][6]
3.351 km[7]
3.523±0.0025 h (R)[8]
3.5257±0.0007 h[9]
3.53±0.010 h (R)[10]
0.2232[7]
0.250±0.093[5][6]
S (SDSS-MOC)[11]
S (Pan-STARRS)[12]
13.79±0.54[12]
14.290±0.200 (R)[10]
14.3[2]
14.338±0.004 (R)[8]
14.5[6]
14.62[3][7]

(9948) 1990 QB2 (provisional designation 1990 QB2) is a stony Nysian asteroid from the inner region of the asteroid belt, approximately 3.4 kilometers (2.1 miles) in diameter. It was discovered on 22 August 1990, by American astronomer Henry Holt at the Palomar Observatory in California.[1] The likely elongated S-type asteroid has a rotation period of 3.53 hours.[3] This asteroid has not been named.[1]

  1. ^ a b c d Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference lcdb was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Ferret was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Masiero-2011 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Pravec-2012b was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Waszczak-2015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Higgins-2006e was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Chang-2015 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference SDSS-Taxonomy was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).