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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04838782499351557 1.5483e-08  
a 2.749476887568984 1.0245e-08 au
q 2.61643568110958 4.6191e-08 au
i 3.550496979937235 1.0482e-06 deg
node 321.4609522753379 1.3463e-05 deg
peri 146.5475321313454 3.0477e-05 deg
M 246.0354817647711 2.5158e-05 deg
tp 2459727.657870559835
(2022-May-28.15787056)
0.00011723 TDB
period 1665.227356200734
4.56
9.3069e-06
2.548e-08
d
yr
n .2161866958643718 1.2083e-09 deg/d
Q 2.882518094028388 1.074e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2873  
   data-arc span      23985 days (65.67 yr)  
   first obs. used      1955-05-21  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40967  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 16:19:35  

Additional Information
 Earth MOID = 1.63391 au 
 Jupiter MOID = 2.16759 au 
 T_jup = 3.342 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457344.5 (2015-Nov-18.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04834678639121156 1.5517e-08  
q 2.617420663700125 4.635e-08 au
tp 2458044.875771411094
(2017-Oct-18.37577141)
0.00011474 TDB
node 321.6214619287082 1.3504e-05 deg
peri 142.9311902006849 3.0625e-05 deg
i 3.545338352479306 1.0466e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2873  
   data-arc span      23985 days (65.67 yr)  
   first obs. used      1955-05-21  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40967  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 16:19:35  

Additional Information
 Jupiter MOID = 2.16759 au 
 T_jup = 3.342 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.407805725636258E-16 -7.046465444278945E-16 -2.675564581888245E-13 -3.667733524823305E-14 -9.291616710804365E-15 -5.495000080823287E-15
q -7.046465444278945E-16 2.148340697551194E-15 9.939745256074788E-13 9.05829032943215E-14 7.801490478360242E-14 1.611789199165015E-14
tp -2.675564581888245E-13 9.939745256074788E-13 1.316426840316542E-8 -6.305206032582207E-10 3.217330460653505E-9 5.455059588129719E-11
node -3.667733524823305E-14 9.05829032943215E-14 -6.305206032582207E-10 1.823458522723566E-10 -3.051745963918311E-10 -3.509683337993918E-12
peri -9.291616710804365E-15 7.801490478360242E-14 3.217330460653505E-9 -3.051745963918311E-10 9.379008788987943E-10 1.383904582395131E-11
i -5.495000080823287E-15 1.611789199165015E-14 5.455059588129719E-11 -3.509683337993918E-12 1.383904582395131E-11 1.095270983520082E-12

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 12.26   n/a E2020-QM5  
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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2008-Oct-09 23:50 < 00:01 David 0.0249167228835145 0.0249156871185971 0.024917758654176 6.56665934738379 6.56665925505277 2454749.492801933 0.323524238975118 55.8660108674561 24.1315629896371 25.0481331940809 89020.2502445587 T 39 CATAB v2.0f-lin.ifort 2021-Mar-16 16:20:37 2021-Mar-16 16:20
2165-Feb-07 18:38 < 00:01 Thisb 0.0485471642895951 0.0485460979666121 0.0485482321478475 3.90502792763503 3.90502789166948 2511848.276700790 0.561472471277008 864.651351683224 46.1005165851142 88.2454837715813 157370.451949062 T 39 CATAB v2.0f-lin.ifort 2021-Mar-16 16:20:37 2021-Mar-16 16:20

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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