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JPL Small-Body Database Browser
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74221 (1998 RU80)
Classification: Main-belt Asteroid          SPK-ID: 2074221
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1047490154445875 5.4418e-08  
a 2.608214081416503 1.7183e-08 au
q 2.335006224319415 1.448e-07 au
i 16.88438638643349 6.1496e-06 deg
node 1.961322100627764 1.3604e-05 deg
peri 338.9220175121987 2.6589e-05 deg
M 328.1479684025274 2.0679e-05 deg
tp 2458736.628141996386
(2019-Sep-10.12814200)
8.809e-05 TDB
period 1538.555899291128
4.21
1.5204e-05
4.163e-08
d
yr
n .2339856485980561 2.3122e-09 deg/d
Q 2.881421938513591 1.8983e-08 au
  Orbit Determination Parameters
   # obs. used (total)      768  
   data-arc span      7717 days (21.13 yr)  
   first obs. used      1998-09-14  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49704  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:50:54  

Additional Information
 Earth MOID = 1.33397 au 
 Jupiter MOID = 2.55844 au 
 T_jup = 3.342 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO439560  

74221 (1998 RU80)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RU80 = 2001 GM6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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