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JPL Small-Body Database Browser
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74770 (1999 RY222)
Classification: Main-belt Asteroid          SPK-ID: 2074770
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05574967153495843 3.5057e-08  
a 2.196920979693843 1.04e-08 au
q 2.074443356687652 7.6638e-08 au
i 6.428173442901504 4.5129e-06 deg
node 250.8256270620063 4.9763e-05 deg
peri 137.0185430497403 7.6006e-05 deg
M 96.83862965945106 5.6747e-05 deg
tp 2458680.561712677162
(2019-Jul-16.06171268)
0.00018719 TDB
period 1189.378493285824
3.26
8.4455e-06
2.312e-08
d
yr
n .3026790899887972 2.1493e-09 deg/d
Q 2.319398602700034 1.098e-08 au
  Orbit Determination Parameters
   # obs. used (total)      546  
   data-arc span      21652 days (59.28 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59354  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:52:10  

Additional Information
 Earth MOID = 1.0851 au 
 Jupiter MOID = 2.90116 au 
 T_jup = 3.658 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456629.5 (2013-Dec-03.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05591257379795717 3.5207e-08  
q 2.0741794267051 7.7032e-08 au
tp 2456300.865880567678
(2013-Jan-08.36588057)
0.00018475 TDB
node 250.8716981036486 4.9796e-05 deg
peri 136.6784075545295 7.5782e-05 deg
i 6.425300699791934 4.5111e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      546  
   data-arc span      21652 days (59.28 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59354  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:52:10  

Additional Information
 Jupiter MOID = 2.90116 au 
 T_jup = 3.658 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.239500683170842E-15 -2.690224899865078E-15 -1.700028698325534E-12 6.617903475109753E-15 -5.134864788477563E-13 -5.677811698629749E-16
q -2.690224899865078E-15 5.933934069534784E-15 3.796807714795465E-12 -1.470425523705555E-14 1.154452008859738E-12 1.433979395429771E-15
tp -1.700028698325534E-12 3.796807714795465E-12 3.413127204463881E-8 -9.51294537760799E-11 1.058642481407442E-8 2.262528989066768E-13
node 6.617903475109753E-15 -1.470425523705555E-14 -9.51294537760799E-11 2.479592616113363E-9 -2.493160875541791E-9 9.476384223598904E-11
peri -5.134864788477563E-13 1.154452008859738E-12 1.058642481407442E-8 -2.493160875541791E-9 5.74293878720661E-9 -9.404006766577021E-11
i -5.677811698629749E-16 1.433979395429771E-15 2.262528989066768E-13 9.476384223598904E-11 -9.404006766577021E-11 2.034974561488774E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO432300  

74770 (1999 RY222)          Discovered 1999-Sep-07 by CSS at Catalina
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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