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48721 (1996 UJ2)
Classification: Main-belt Asteroid          SPK-ID: 2048721
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09946941903442319 3.8531e-08  
a 2.968735807909253 1.7473e-08 au
q 2.67343738182983 1.1422e-07 au
i 9.034300538687718 4.8264e-06 deg
node 334.2060801743112 2.4921e-05 deg
peri 32.51999127146367 3.3644e-05 deg
M 218.7988075517491 2.3247e-05 deg
tp 2459733.310387365926
(2022-Jun-02.81038737)
0.00012302 TDB
period 1868.339316953135
5.12
1.6495e-05
4.516e-08
d
yr
n .1926844854857969 1.7012e-09 deg/d
Q 3.264034233988675 1.9211e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1320  
   data-arc span      8519 days (23.32 yr)  
   first obs. used      1996-10-03  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50335  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:12:37  

Additional Information
 Earth MOID = 1.67583 au 
 Jupiter MOID = 2.19327 au 
 T_jup = 3.237 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456600.5 (2013-Nov-04.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09828522055539952 3.835e-08  
q 2.679319668826729 1.1371e-07 au
tp 2456000.826705089866
(2012-Mar-14.32670509)
0.00011671 TDB
node 334.2275770609227 2.4935e-05 deg
peri 33.66728738064081 3.3884e-05 deg
i 9.029423969201945 4.8237e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1320  
   data-arc span      8519 days (23.32 yr)  
   first obs. used      1996-10-03  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50335  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:12:37  

Additional Information
 Jupiter MOID = 2.19327 au 
 T_jup = 3.237 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.470700618408902E-15 -4.318768872012598E-15 -8.937474691437619E-13 -2.713739305703605E-15 -1.732874683916608E-13 -1.6628568535536E-15
q -4.318768872012598E-15 1.292963148318747E-14 2.812532739293325E-12 8.19970021266264E-15 5.596058791885152E-13 5.295488464409527E-15
tp -8.937474691437619E-13 2.812532739293325E-12 1.362116307939877E-8 1.099795916805867E-11 2.693126516890178E-9 -2.051782056733215E-12
node -2.713739305703605E-15 8.19970021266264E-15 1.099795916805867E-11 6.217606882831395E-10 -6.113048447559755E-10 -9.403544006485227E-12
peri -1.732874683916608E-13 5.596058791885152E-13 2.693126516890178E-9 -6.113048447559755E-10 1.148148428287524E-9 8.956029535890274E-12
i -1.6628568535536E-15 5.295488464409527E-15 -2.051782056733215E-12 -9.403544006485227E-12 8.956029535890274E-12 2.326834392790661E-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 13.8   n/a MPO390030  
diameter diameter 6.457 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.416 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.126   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48721 (1996 UJ2)          Discovered 1996-Oct-17 by Spacewatch at Kitt Peak
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 UJ2 = 2001 QG14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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