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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 
[ 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 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1944-Aug-02 08:55 00:04 Hygie 0.0413867604969532 0.0413854955045774 0.0413880254920543 2.87462450449525 2.87462417973723 2431304.871344782 3.98307467861648 66.5423428104242 40.822880582928 24.5862605148522 105183.475955009 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:05:56 2020-May-20 02:05
1976-Dec-02 00:01 < 00:01 Amphi 0.0112599699733022 0.011258454913339 0.0112614853010338 3.03985460859337 3.03985444064221 2443114.500431204 0.804965668871645 124.870412166023 37.249219577909 56.568411769228 38427.7316520566 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:05:56 2020-May-20 02:05
2097-Jul-15 13:27 < 00:01 Iris 0.0377450966436128 0.0377391245511126 0.0377510688706003 1.50292639181227 1.50292629047369 2487170.060669717 0.831999657931538 316.797483785743 51.0893209362588 -21.0221944429667 42832.7772102244 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:05:56 2020-May-20 02:05

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