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JPL Small-Body Database Browser
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2440 Educatio (1978 VQ4)
Classification: Main-belt Asteroid          SPK-ID: 2002440
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1631708564315176 3.5464e-08  
a 2.215580770340116 6.4684e-09 au
q 1.854062558550518 7.9043e-08 au
i 4.105792484612335 3.4696e-06 deg
node 227.1922426831843 5.2393e-05 deg
peri 77.85075162675825 5.3575e-05 deg
M 316.3542030047788 1.2286e-05 deg
tp 2459146.539297487301
(2020-Oct-24.03929749)
4.1206e-05 TDB
period 1204.563800294099
3.30
5.2751e-06
1.444e-08
d
yr
n .2988633727097764 1.3088e-09 deg/d
Q 2.577098982129714 7.5239e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2680  
   data-arc span      33401 days (91.45 yr)  
   first obs. used      1928-08-22  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42589  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:21:37  

Additional Information
 Earth MOID = .844338 au 
 Jupiter MOID = 2.64981 au 
 T_jup = 3.633 
[ 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 13.2   n/a MPO473798  
diameter diameter 6.586 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 1561. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Rowe, B. (2018) Minor Planet Bull. 45, 203-207.]
geometric albedo albedo 0.247   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2440 Educatio (1978 VQ4)          Discovered 1978-Nov-07 by Helin, E. F. and Bus, S. J. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1978 VQ4 = 1928 QH = 1954 JK = 1968 US1 = 1977 JG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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