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181884 (1999 RS28)
Classification: Main-belt Asteroid          SPK-ID: 2181884
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2160981387068631 6.3661e-08  
a 3.136137770103142 2.4687e-08 au
q 2.458424235255561 1.9924e-07 au
i 17.44368339773834 6.9993e-06 deg
node 193.0062746798944 1.8394e-05 deg
peri 191.7533955951664 2.2318e-05 deg
M 283.8880365345101 1.6816e-05 deg
tp 2459629.385685153262
(2022-Feb-18.88568515)
9.851e-05 TDB
period 2028.57526760797
5.55
2.3953e-05
6.558e-08
d
yr
n .1774644528839693 2.0954e-09 deg/d
Q 3.813851304950723 3.0022e-08 au
  Orbit Determination Parameters
   # obs. used (total)      358  
   data-arc span      15646 days (42.84 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61574  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:28  

Additional Information
 Earth MOID = 1.46253 au 
 Jupiter MOID = 1.65201 au 
 T_jup = 3.105 
[ 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 15.42   n/a E2021B55  
diameter diameter 2.603 km 0.521 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.180   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181884 (1999 RS28)          Discovered 1999-Sep-08 by Sarounova, L. at Ondrejov
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

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Alternate Designations
 1999 RS28 = 3078 T-3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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