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175750 (1998 RY21)
Classification: Main-belt Asteroid          SPK-ID: 2175750
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1813703116859541 3.7794e-08  
a 2.421817386517444 1.0056e-08 au
q 1.982571612278312 9.4582e-08 au
i .8980667644678835 5.5628e-06 deg
node 204.8668349479023 0.00022836 deg
peri 77.10274442806285 0.00022903 deg
M 22.12298323392921 1.5152e-05 deg
tp 2459115.903634407762
(2020-Sep-23.40363441)
5.7961e-05 TDB
period 1376.608719139573
3.77
8.5743e-06
2.348e-08
d
yr
n .2615122183920295 1.6288e-09 deg/d
Q 2.861063160756575 1.188e-08 au
  Orbit Determination Parameters
   # obs. used (total)      362  
   data-arc span      7977 days (21.84 yr)  
   first obs. used      1998-09-15  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5952  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 09:56:18  

Additional Information
 Earth MOID = .964443 au 
 Jupiter MOID = 2.27947 au 
 T_jup = 3.490 
[ 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 17.10   n/a E2021B55  

175750 (1998 RY21)          Discovered 1998-Sep-15 by Spacewatch at Kitt Peak
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

Alternate Designations
 1998 RY21 = 2005 MP7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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