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2601 Bologna (1980 XA)
Classification: Main-belt Asteroid          SPK-ID: 2002601
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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06465475824094243 3.6696e-08  
a 3.128075305770448 1.6772e-08 au
q 2.925830353116397 1.1634e-07 au
i 9.586684852204012 4.0127e-06 deg
node 288.1579674066224 2.3972e-05 deg
peri 193.1517916433142 3.9133e-05 deg
M 32.0822825287561 3.0303e-05 deg
tp 2459020.415230284460
(2020-Jun-19.91523028)
0.00017002 TDB
period 2020.757626564915
5.53
1.6252e-05
4.45e-08
d
yr
n .1781510039934694 1.4328e-09 deg/d
Q 3.330320258424499 1.7857e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2590  
   data-arc span      20463 days (56.02 yr)  
   first obs. used      1965-01-11  
   last obs. used      2021-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40532  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:04:18  

Additional Information
 Earth MOID = 1.9427 au 
 Jupiter MOID = 1.77696 au 
 T_jup = 3.189 
[ show covariance matrix ]

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 11.46   n/a E2021B10  
diameter diameter 12.172 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.360   0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2601 Bologna (1980 XA)          Discovered 1980-Dec-08 by Osservatorio San Vittore at Bologna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1980 XA = 1965 AC1 = 1971 DD1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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