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JPL Small-Body Database Browser
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39937 (1998 FW98)
Classification: Main-belt Asteroid          SPK-ID: 2039937
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05757893625436309 4.4806e-08  
a 2.388720520396308 9.0929e-09 au
q 2.25118053382292 1.0827e-07 au
i 6.09481891626925 3.5211e-06 deg
node 244.6020628705792 4.204e-05 deg
peri 281.2123250670901 5.3349e-05 deg
M 16.09638352537993 3.1404e-05 deg
tp 2458940.206256639642
(2020-Mar-31.70625664)
0.00011773 TDB
period 1348.48598602937
3.69
7.6997e-06
2.108e-08
d
yr
n .2669660669296411 1.5244e-09 deg/d
Q 2.526260506969695 9.6165e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1556  
   data-arc span      8096 days (22.17 yr)  
   first obs. used      1998-02-26  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49292  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:47:31  

Additional Information
 Earth MOID = 1.26662 au 
 Jupiter MOID = 2.472 au 
 T_jup = 3.524 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456904.5 (2014-Sep-04.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0577480114405531 4.4924e-08  
q 2.251142366138839 1.0861e-07 au
tp 2456245.261736707788
(2012-Nov-13.76173671)
0.00012235 TDB
node 244.6626397192114 4.2072e-05 deg
peri 281.8471889306107 5.3243e-05 deg
i 6.091829766767551 3.5197e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1556  
   data-arc span      8096 days (22.17 yr)  
   first obs. used      1998-02-26  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49292  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:47:31  

Additional Information
 Jupiter MOID = 2.472 au 
 T_jup = 3.524 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.018168924119698E-15 -4.86408162615642E-15 4.011346259600976E-13 8.384132716021238E-15 1.453222861639908E-13 -1.816618407987261E-15
q -4.86408162615642E-15 1.179594898734004E-14 -1.383965494298588E-12 -1.917234838711141E-14 -4.55039418431432E-13 4.339422858792095E-15
tp 4.011346259600976E-13 -1.383965494298588E-12 1.496924963409084E-8 -1.197013211139828E-11 4.013121784832796E-9 6.246867309598853E-13
node 8.384132716021238E-15 -1.917234838711141E-14 -1.197013211139828E-11 1.770091559617707E-9 -1.762710205672775E-9 -1.574660513609776E-11
peri 1.453222861639908E-13 -4.55039418431432E-13 4.013121784832796E-9 -1.762710205672775E-9 2.834846611982594E-9 1.578548326471763E-11
i -1.816618407987261E-15 4.339422858792095E-15 6.246867309598853E-13 -1.574660513609776E-11 1.578548326471763E-11 1.238799330759204E-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 14.7   n/a MPO502432  
diameter diameter 2.426 km 0.592 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.361   0.217 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39937 (1998 FW98)          Discovered 1998-Mar-31 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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