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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1631708568888363 3.6768e-08  
a 2.215580770402387 6.5558e-09 au
q 1.854062557589401 8.1686e-08 au
i 4.105792612224264 3.4723e-06 deg
node 227.1922514112824 5.3226e-05 deg
peri 77.85074292694125 5.4398e-05 deg
M 316.3542029367831 1.2464e-05 deg
tp 2459146.539297720973
(2020-Oct-24.03929772)
4.182e-05 TDB
period 1204.563800344882
3.30
5.3464e-06
1.464e-08
d
yr
n .2988633726971766 1.3265e-09 deg/d
Q 2.577098983215373 7.6255e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2652  
   data-arc span      33375 days (91.38 yr)  
   first obs. used      1928-08-22  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42758  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:34:46  

Additional Information
 Earth MOID = .844338 au 
 Jupiter MOID = 2.64981 au 
 T_jup = 3.633 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456426.5 (2013-May-14.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1636391888401804 3.6867e-08  
q 1.852728967904181 8.1899e-08 au
tp 2456736.918628031498
(2014-Mar-20.41862803)
4.0865e-05 TDB
node 227.2872071595011 5.3279e-05 deg
peri 77.67766979247449 5.4434e-05 deg
i 4.103654397977343 3.4708e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2652  
   data-arc span      33375 days (91.38 yr)  
   first obs. used      1928-08-22  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42758  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:34:46  

Additional Information
 Jupiter MOID = 2.64981 au 
 T_jup = 3.633 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.359178189975422E-15 -3.012509815827776E-15 5.393154816315384E-13 -2.334922470156207E-15 1.231579839838245E-13 1.156008767159086E-16
q -3.012509815827776E-15 6.707521693597454E-15 -1.210771558592363E-12 5.453647085587202E-15 -2.808583993152235E-13 -1.864713454689611E-16
tp 5.393154816315384E-13 -1.210771558592363E-12 1.669942184146304E-9 1.710239780107311E-12 4.685411237522464E-10 -1.894793393350413E-14
node -2.334922470156207E-15 5.453647085587202E-15 1.710239780107311E-12 2.838666932834775E-9 -2.830572733615767E-9 -2.915894161183321E-11
peri 1.231579839838245E-13 -2.808583993152235E-13 4.685411237522464E-10 -2.830572733615767E-9 2.963022072127565E-9 2.905851548442331E-11
i 1.156008767159086E-16 -1.864713454689611E-16 -1.894793393350413E-14 -2.915894161183321E-11 2.905851548442331E-11 1.204659201179947E-11

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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