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4292 Aoba (1989 VO)
Classification: Main-belt Asteroid          SPK-ID: 2004292
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04786028063184308 3.2201e-08  
a 2.751568474556655 1.0572e-08 au
q 2.619877635186641 8.9874e-08 au
i 3.549477341242232 3.9098e-06 deg
node 321.4608242365726 5.0045e-05 deg
peri 145.8429567395514 6.4036e-05 deg
M 203.5378713078515 4.1055e-05 deg
tp 2459725.062157917543
(2022-May-25.56215792)
0.0001914 TDB
period 1667.127879638806
4.56
9.6085e-06
2.631e-08
d
yr
n .2159402433351401 1.2446e-09 deg/d
Q 2.883259313926668 1.1078e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2702  
   data-arc span      23913 days (65.47 yr)  
   first obs. used      1955-05-21  
   last obs. used      2020-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41147  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:16:50  

Additional Information
 Earth MOID = 1.63754 au 
 Jupiter MOID = 2.16836 au 
 T_jup = 3.341 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457273.5 (2015-Sep-08.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04837370445517897 3.1685e-08  
q 2.617302351508618 8.8568e-08 au
tp 2458044.737932450597
(2017-Oct-18.23793245)
0.00018839 TDB
node 321.6212769324854 5.0174e-05 deg
peri 142.9088461531485 6.4145e-05 deg
i 3.545361031409581 3.9053e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2702  
   data-arc span      23913 days (65.47 yr)  
   first obs. used      1955-05-21  
   last obs. used      2020-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41147  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:16:50  

Additional Information
 Jupiter MOID = 2.16836 au 
 T_jup = 3.341 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.003947072557757E-15 -2.788601271617872E-15 1.12358834296597E-12 -6.523463357162444E-16 2.581118371915177E-13 2.276188340420231E-16
q -2.788601271617872E-15 7.844377522244256E-15 -2.509291233175354E-12 1.838553454307891E-15 -5.968247451126693E-13 -5.679172507958532E-16
tp 1.12358834296597E-12 -2.509291233175354E-12 3.548930303335664E-8 -2.159319039525017E-11 7.535840855194387E-9 -3.739721806283375E-13
node -6.523463357162444E-16 1.838553454307891E-15 -2.159319039525017E-11 2.517383718247329E-9 -2.516729404389493E-9 1.329381023415982E-11
peri 2.581118371915177E-13 -5.968247451126693E-13 7.535840855194387E-9 -2.516729404389493E-9 4.114583822683132E-9 -1.336038367576306E-11
i 2.276188340420231E-16 -5.679172507958532E-16 -3.739721806283375E-13 1.329381023415982E-11 -1.336038367576306E-11 1.525173122175341E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.2   n/a MPO395038  
diameter diameter 24.695 km 0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.038   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

4292 Aoba (1989 VO)          Discovered 1989-Nov-04 by Koishikawa, M. at Ayashi
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1989 VO = 1938 QE = 1955 KK = 1957 WH2 = 1959 ES = 1979 QW2 = 1986 AB1 = 1988 PX3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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