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91177 (1998 RJ22)
Classification: Main-belt Asteroid          SPK-ID: 2091177
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .138307635283319 4.2547e-08  
a 3.192442710179691 2.5197e-08 au
q 2.750903508157268 1.4033e-07 au
i 4.994193018973906 5.1358e-06 deg
node 203.884273541654 4.5503e-05 deg
peri 132.5689131297888 4.8497e-05 deg
M 7.373630490425501 1.6533e-05 deg
tp 2459353.826136371795
(2021-May-19.32613637)
9.5504e-05 TDB
period 2083.450062503363
5.70
2.4666e-05
6.753e-08
d
yr
n .1727903185581723 2.0456e-09 deg/d
Q 3.633981912202115 2.8682e-08 au
  Orbit Determination Parameters
   # obs. used (total)      700  
   data-arc span      9265 days (25.37 yr)  
   first obs. used      1996-03-20  
   last obs. used      2021-08-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58775  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 22:04:39  

Additional Information
 Earth MOID = 1.7441 au 
 Jupiter MOID = 1.78634 au 
 T_jup = 3.176 
[ 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 14.66   n/a MPO637239  
diameter diameter 6.954 km 1.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.053   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

91177 (1998 RJ22)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 RJ22 = 1999 XY264 = 2002 GF44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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