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74736 (1999 RD180)
Classification: Main-belt Asteroid          SPK-ID: 2074736
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .139578849172715 4.9239e-08  
a 2.356665484955559 1.077e-08 au
q 2.027724828680404 1.1692e-07 au
i 7.257682040250605 4.3403e-06 deg
node 52.15216378513042 4.1829e-05 deg
peri 278.748121665759 4.4353e-05 deg
M 165.8962587428254 1.5879e-05 deg
tp 2457991.553091368859
(2017-Aug-26.05309137)
5.7235e-05 TDB
period 1321.433580048661
3.62
9.0583e-06
2.48e-08
d
yr
n .2724313998337649 1.8675e-09 deg/d
Q 2.685606141230715 1.2273e-08 au
  Orbit Determination Parameters
   # obs. used (total)      683  
   data-arc span      7651 days (20.95 yr)  
   first obs. used      1998-04-20  
   last obs. used      2019-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60585  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:14:16  

Additional Information
 Earth MOID = 1.03187 au 
 Jupiter MOID = 2.66261 au 
 T_jup = 3.530 
[ 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 15.7   n/a MPO319941  
diameter diameter 1.616 km 0.438 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.355   0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74736 (1999 RD180)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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