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295414 (2008 JU31)
Classification: Main-belt Asteroid          SPK-ID: 2295414
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08828509686721439 7.008e-08  
a 3.159003392086888 4.3283e-08 au
q 2.880110471612638 2.2058e-07 au
i 21.96299466123547 7.8475e-06 deg
node 99.68333368945164 1.8164e-05 deg
peri 122.9401541677601 4.8421e-05 deg
M 59.56088721913772 4.2186e-05 deg
tp 2458661.201278773027
(2019-Jun-26.70127877)
0.00024086 TDB
period 2050.801211075018
5.61
4.2149e-05
1.154e-07
d
yr
n .1755411485305736 3.6078e-09 deg/d
Q 3.437896312561137 4.7105e-08 au
  Orbit Determination Parameters
   # obs. used (total)      308  
   data-arc span      7551 days (20.67 yr)  
   first obs. used      1999-10-13  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53192  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 05:17:54  

Additional Information
 Earth MOID = 1.91895 au 
 Jupiter MOID = 1.79981 au 
 T_jup = 3.087 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458023.5 (2017-Sep-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08618567154952995 7.0493e-08  
q 2.882690465430492 2.1989e-07 au
tp 2458660.415650278686
(2019-Jun-25.91565028)
0.00024625 TDB
node 99.6910970801796 1.8178e-05 deg
peri 122.7871200410873 4.9416e-05 deg
i 21.96009208488644 7.8485e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      308  
   data-arc span      7551 days (20.67 yr)  
   first obs. used      1999-10-13  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53192  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 05:17:54  

Additional Information
 Jupiter MOID = 1.79981 au 
 T_jup = 3.087 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.969224419775591E-15 -1.525876307109965E-14 2.774452999684687E-12 -3.833531017280202E-15 6.392745657915762E-13 -1.722463752271481E-14
q -1.525876307109965E-14 4.835310621120612E-14 -9.456381148100918E-12 1.133387680763069E-14 -2.227290419035971E-12 6.198942780652033E-14
tp 2.774452999684687E-12 -9.456381148100918E-12 6.064121806088336E-8 -3.789278915884909E-11 1.134753261243871E-8 2.402986947093025E-11
node -3.833531017280202E-15 1.133387680763069E-14 -3.789278915884909E-11 3.304456910523818E-10 -3.129269530668452E-10 -1.712719091050921E-11
peri 6.392745657915762E-13 -2.227290419035971E-12 1.134753261243871E-8 -3.129269530668452E-10 2.441915158333612E-9 1.950911840487637E-11
i -1.722463752271481E-14 6.198942780652033E-14 2.402986947093025E-11 -1.712719091050921E-11 1.950911840487637E-11 6.159823928761839E-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 14.9   n/a MPO260565  
diameter diameter 7.671 km 0.270 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.030   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

295414 (2008 JU31)          Discovered 2008-May-05 by CSS at Catalina
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

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