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JPL Small-Body Database Browser
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2517 Orma (1968 SB)
Classification: Main-belt Asteroid          SPK-ID: 2002517
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1738242587359189 4.1819e-08  
a 3.18352077367649 1.6355e-08 au
q 2.630147635021775 1.3424e-07 au
i 2.632644261351374 3.5086e-06 deg
node 71.86600530943977 9.8157e-05 deg
peri 299.9051862226682 9.8667e-05 deg
M 41.25717936071665 9.1184e-06 deg
tp 2458762.730036311656
(2019-Oct-06.23003631)
5.2918e-05 TDB
period 2074.722224207747
5.68
1.5988e-05
4.377e-08
d
yr
n .1735172042789822 1.3372e-09 deg/d
Q 3.736893912331205 1.9198e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2308  
   data-arc span      23670 days (64.80 yr)  
   first obs. used      1955-04-16  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47307  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:24:04  

Additional Information
 Earth MOID = 1.63163 au 
 Jupiter MOID = 1.72783 au 
 T_jup = 3.173 
[ 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 11.9   n/a MPO332840  
diameter diameter 20.087 km 0.533 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.083   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2517 Orma (1968 SB)          Discovered 1968-Sep-28 by Wild, P. at Zimmerwald
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1968 SB = 1972 HE = 1974 WA1 = 1977 FH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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