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39845 (1998 BT35)
Classification: Main-belt Asteroid          SPK-ID: 2039845
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1629142059847914 3.4632e-08  
a 2.274644703758506 7.0476e-09 au
q 1.904072767948178 7.8049e-08 au
i 5.255713149565457 3.6496e-06 deg
node 348.992623593177 3.653e-05 deg
peri 46.47373537413829 3.792e-05 deg
M 277.079205728008 1.0382e-05 deg
tp 2459289.122201293055
(2021-Mar-15.62220129)
3.6539e-05 TDB
period 1253.051099880685
3.43
5.8235e-06
1.594e-08
d
yr
n .2872987382831226 1.3352e-09 deg/d
Q 2.645216639568834 8.1957e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1830  
   data-arc span      12332 days (33.76 yr)  
   first obs. used      1986-09-12  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48164  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:03:36  

Additional Information
 Earth MOID = .914712 au 
 Jupiter MOID = 2.79675 au 
 T_jup = 3.587 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456971.5 (2014-Nov-10.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1630398366347523 3.4583e-08  
q 1.903302300912353 7.7936e-08 au
tp 2456785.041991558357
(2014-May-07.54199156)
3.4721e-05 TDB
node 349.0809602503803 3.6546e-05 deg
peri 46.63837722151951 3.7932e-05 deg
i 5.255632443315948 3.6486e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1830  
   data-arc span      12332 days (33.76 yr)  
   first obs. used      1986-09-12  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48164  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:03:36  

Additional Information
 Jupiter MOID = 2.79675 au 
 T_jup = 3.587 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.195989184390243E-15 -2.687849106568486E-15 -1.022510450750419E-13 5.323800603638811E-15 -6.408264684585E-14 -1.594265791619217E-15
q -2.687849106568486E-15 6.07400103520189E-15 2.282463754763054E-13 -1.175851512814676E-14 1.442781897388751E-13 3.684746144490891E-15
tp -1.022510450750419E-13 2.282463754763054E-13 1.205538331696425E-9 1.087590987718743E-12 3.60439925519965E-10 -2.290571945425306E-13
node 5.323800603638811E-15 -1.175851512814676E-14 1.087590987718743E-12 1.335623130124661E-9 -1.329437111630491E-9 1.347791000787315E-11
peri -6.408264684585E-14 1.442781897388751E-13 3.60439925519965E-10 -1.329437111630491E-9 1.438810529500783E-9 -1.344164594185399E-11
i -1.594265791619217E-15 3.684746144490891E-15 -2.290571945425306E-13 1.347791000787315E-11 -1.344164594185399E-11 1.331263695440278E-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 14.3   n/a MPO337581  
diameter diameter 4.992 km 0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.195   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

39845 (1998 BT35)          Discovered 1998-Jan-28 by Spacewatch at Kitt Peak
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 BT35 = 1962 TK = 1986 RQ15 = 1993 VV 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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