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2516 Roman (1964 VY)
Classification: Main-belt Asteroid          SPK-ID: 2002516
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1653218397924144 2.3956e-08  
a 2.27954360161511 5.7852e-09 au
q 1.902685259509074 5.46e-08 au
i 1.09344850497951 2.989e-06 deg
node 123.3969878213833 0.00017394 deg
peri 313.7124052657542 0.00017429 deg
M 35.3251264334337 1.0422e-05 deg
tp 2458877.146491552200
(2020-Jan-28.64649155)		 3.6396e-05 TDB
period 1257.101319223545
3.44		 4.7855e-06
1.31e-08		 d
yr
n .2863730985680262 1.0902e-09 deg/d
Q 2.656401943721147 6.7416e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2553  
   data-arc span      20267 days (55.49 yr)  
   first obs. used      1964-11-06  
   last obs. used      2020-05-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45659  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:08:37  

Additional Information
 Earth MOID = .918241 au 
 Jupiter MOID = 2.58392 au 
 T_jup = 3.588 
[ 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 13.5   n/a MPO416735  
diameter diameter 4.408 km 0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.6266 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Benishek, V.; Pravec, P.; Durkee, R.; Husarkik, M.; et al. (2019) CBET 4704.]
geometric albedo albedo 0.301   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2516 Roman (1964 VY)          Discovered 1964-Nov-06 by Goethe Link Observatory at Brooklyn
Discovered by the Indiana Asteroid Program, Goethe Link Observatory, University of Indiana. This program was conceived and directed by F. K. Edmondson; the plates were blinked and measured astrometrically by B. Potter and, following her retirement, by D. Owings; and the photometry was performed under the direction of T. Gehrels. During the years 1947-1967, in which the plates were exposed, a large number of people participated in various aspects of the program.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1964 VY = 1964 VG2 = 1974 SH = 1976 GB6 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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