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2968 Iliya (1978 QJ)
Classification: Mars-crossing Asteroid          SPK-ID: 2002968
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3113046815442121 3.9566e-08  
a 2.366695560056465 7.8857e-09 au
q 1.629932152420986 9.463e-08 au
i 9.155437955304054 4.5172e-06 deg
node 274.3024184131126 2.4356e-05 deg
peri 34.32900383764576 2.5027e-05 deg
M 177.9171263506424 5.5524e-06 deg
tp 2458343.255023194993
(2018-Aug-12.75502319)
2.0135e-05 TDB
period 1329.878671620912
3.64
6.6466e-06
1.82e-08
d
yr
n .2707013862860262 1.3529e-09 deg/d
Q 3.103458967691944 1.0341e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1265  
   data-arc span      25623 days (70.15 yr)  
   first obs. used      1949-11-19  
   last obs. used      2020-01-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48929  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:35:27  

Additional Information
 Earth MOID = .624281 au 
 Jupiter MOID = 2.19442 au 
 T_jup = 3.464 
[ 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 14.9   n/a MPO452204  
diameter diameter 4.456 km 0.961 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.129   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

2968 Iliya (1978 QJ)          Discovered 1978-Aug-31 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1978 QJ = 1981 EZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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