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22747 (1998 UD7)
Classification: Main-belt Asteroid          SPK-ID: 2022747
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2849218791391356 3.243e-08  
a 2.594225787443997 1.0298e-08 au
q 1.85507410117425 8.7183e-08 au
i 3.06078343201482 3.8162e-06 deg
node 34.01885763360525 6.7306e-05 deg
peri 270.9625587916055 6.7715e-05 deg
M 174.5633824958715 9.9426e-06 deg
tp 2458460.450562646194
(2018-Dec-07.95056265)
3.924e-05 TDB
period 1526.19520565071
4.18
9.0877e-06
2.488e-08
d
yr
n .2358807042946449 1.4045e-09 deg/d
Q 3.333377473713745 1.3232e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1902  
   data-arc span      19269 days (52.76 yr)  
   first obs. used      1968-05-22  
   last obs. used      2021-02-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50993  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:11:17  

Additional Information
 Earth MOID = .841185 au 
 Jupiter MOID = 1.94332 au 
 T_jup = 3.357 
[ 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 14.11   n/a E2021B10  
diameter diameter 5.245 km 0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.175   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22747 (1998 UD7)          Discovered 1998-Oct-22 by Korlevic, K. at Visnjan
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 UD7 = 1968 KC = 1980 FJ4 = 1981 SA2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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