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JPL Small-Body Database Browser
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74767 (1999 RH221)
Classification: Main-belt Asteroid          SPK-ID: 2074767
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1551630979127415 5.3642e-08  
a 2.258106770999393 9.7494e-09 au
q 1.907731928993389 1.253e-07 au
i 4.998828540492356 4.0507e-06 deg
node 98.40172469713315 5.636e-05 deg
peri 290.9718808028549 5.7664e-05 deg
M 258.2310955154925 1.4542e-05 deg
tp 2458950.870663092352
(2020-Apr-11.37066309)
5.1274e-05 TDB
period 1239.410400968286
3.39
8.0267e-06
2.198e-08
d
yr
n .2904606897914936 1.8811e-09 deg/d
Q 2.608481613005396 1.1262e-08 au
  Orbit Determination Parameters
   # obs. used (total)      631  
   data-arc span      7355 days (20.14 yr)  
   first obs. used      1999-09-05  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62581  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:56:02  

Additional Information
 Earth MOID = .919245 au 
 Jupiter MOID = 2.82846 au 
 T_jup = 3.601 
[ 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 16.2   n/a MPO436306  

74767 (1999 RH221)          Discovered 1999-Sep-05 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RH221 = 2002 LV58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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