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26978 (1997 UZ4)
Classification: Main-belt Asteroid          SPK-ID: 2026978
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1966279744076745 4.0469e-08  
a 3.097157206379424 1.6672e-08 au
q 2.488169458466906 1.2577e-07 au
i 5.188378130385736 4.8821e-06 deg
node 46.63752618882263 4.9469e-05 deg
peri 11.52484204141282 5.1159e-05 deg
M 84.90559287461599 1.1811e-05 deg
tp 2458530.955130108232
(2019-Feb-16.45513011)
6.5116e-05 TDB
period 1990.871831148508
5.45
1.6075e-05
4.401e-08
d
yr
n .1808253019443852 1.4601e-09 deg/d
Q 3.706144954291942 1.995e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1676  
   data-arc span      22366 days (61.23 yr)  
   first obs. used      1958-11-11  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4872  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:55:00  

Additional Information
 Earth MOID = 1.50064 au 
 Jupiter MOID = 1.66194 au 
 T_jup = 3.187 
[ 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 13.2   n/a MPO452547  
diameter diameter 7.998 km 0.271 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.159   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26978 (1997 UZ4)          Discovered 1997-Oct-20 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 UZ4 = 1958 VQ = 1999 GY44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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