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70221 (1999 RZ44)
Classification: Main-belt Asteroid          SPK-ID: 2070221
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .23361641333908 3.728e-08  
a 2.414655320126752 7.9446e-09 au
q 1.850552204788612 8.9594e-08 au
i 1.463887359553481 4.2196e-06 deg
node 195.8831392521548 0.00012416 deg
peri 164.9247711532397 0.00012434 deg
M 226.3130170528604 6.7576e-06 deg
tp 2459709.441385281882
(2022-May-09.94138528)
2.6926e-05 TDB
period 1370.506646663745
3.75
6.7637e-06
1.852e-08
d
yr
n .2626765808661752 1.2964e-09 deg/d
Q 2.978758435464892 9.8005e-09 au
  Orbit Determination Parameters
   # obs. used (total)      908  
   data-arc span      7895 days (21.62 yr)  
   first obs. used      1999-08-07  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56354  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:10:37  

Additional Information
 Earth MOID = .845948 au 
 Jupiter MOID = 2.47902 au 
 T_jup = 3.479 
[ 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 16.00   n/a E2021B10  
diameter diameter 3.252 km 0.693 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.066   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

70221 (1999 RZ44)          Discovered 1999-Sep-11 by Bernasconi, L. at St. Michel sur Me
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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