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JPL Small-Body Database Browser
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4279 De Gasparis (1982 WB)
Classification: Main-belt Asteroid          SPK-ID: 2004279
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2085528107393806 2.9411e-08  
a 2.363675922560748 7.7832e-09 au
q 1.870724665233706 6.9906e-08 au
i 4.280488508958677 3.7474e-06 deg
node 265.624469620881 5.3726e-05 deg
peri 161.3763166504293 5.4754e-05 deg
M 112.0812831381943 1.1342e-05 deg
tp 2458587.251850697656
(2019-Apr-13.75185070)
4.1023e-05 TDB
period 1327.334320088161
3.63
6.5561e-06
1.795e-08
d
yr
n .2712202905866918 1.3396e-09 deg/d
Q 2.856627179887791 9.4064e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1703  
   data-arc span      23753 days (65.03 yr)  
   first obs. used      1955-04-16  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4813  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:05:42  

Additional Information
 Earth MOID = .885307 au 
 Jupiter MOID = 2.4493 au 
 T_jup = 3.516 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456916.5 (2014-Sep-16.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2072489855588752 2.9395e-08  
q 1.874747335424958 6.9813e-08 au
tp 2457259.261656042499
(2015-Aug-24.76165604)
3.9581e-05 TDB
node 265.7454430225382 5.3768e-05 deg
peri 161.2970143995141 5.4814e-05 deg
i 4.276881239618893 3.7467e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1703  
   data-arc span      23753 days (65.03 yr)  
   first obs. used      1955-04-16  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4813  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:05:42  

Additional Information
 Jupiter MOID = 2.4493 au 
 T_jup = 3.516 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.640736440711533E-16 -2.044112727562745E-15 1.919295810315788E-13 2.456769949324764E-15 5.699910531530656E-14 3.594401467456891E-17
q -2.044112727562745E-15 4.873791123066259E-15 -4.014572809886072E-13 -5.206134770889183E-15 -1.246340164780998E-13 2.57993293464148E-17
tp 1.919295810315788E-13 -4.014572809886072E-13 1.56664544942038E-9 -2.690700801178795E-12 4.381185270400053E-10 7.417847675162082E-13
node 2.456769949324764E-15 -5.206134770889183E-15 -2.690700801178795E-12 2.891002902147157E-9 -2.883236085961184E-9 4.81953180454618E-11
peri 5.699910531530656E-14 -1.246340164780998E-13 4.381185270400053E-10 -2.883236085961184E-9 3.004550702439908E-9 -4.788827444845435E-11
i 3.594401467456891E-17 2.57993293464148E-17 7.417847675162082E-13 4.81953180454618E-11 -4.788827444845435E-11 1.403777200802293E-11

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 14.5   n/a MPO358671  
diameter diameter 7.644 km 2.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.055   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

4279 De Gasparis (1982 WB)          Discovered 1982-Nov-19 by Oss. San Vittore at Bologna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1982 WB = 1978 RW16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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