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27960 Dobias (1997 SN1)
Classification: Main-belt Asteroid          SPK-ID: 2027960
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1682922996583667 3.6754e-08  
a 2.687193396702842 1.2927e-08 au
q 2.234959440344944 9.8233e-08 au
i 12.24016872434636 5.3661e-06 deg
node 336.371736852782 1.9256e-05 deg
peri 298.9132612472495 2.4655e-05 deg
M 128.598766089455 1.5633e-05 deg
tp 2458425.747176963841
(2018-Nov-03.24717696)
6.8943e-05 TDB
period 1608.965797922877
4.41
1.161e-05
3.179e-08
d
yr
n .2237462104320355 1.6145e-09 deg/d
Q 3.139427353060741 1.5102e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1332  
   data-arc span      8170 days (22.37 yr)  
   first obs. used      1997-09-21  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49672  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:13:28  

Additional Information
 Earth MOID = 1.24827 au 
 Jupiter MOID = 2.15655 au 
 T_jup = 3.321 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456850.5 (2014-Jul-12.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1686552967473299 3.6639e-08  
q 2.234061668823306 9.8003e-08 au
tp 2456818.942164466730
(2014-Jun-10.44216447)
6.7813e-05 TDB
node 336.435574071628 1.924e-05 deg
peri 299.2425307452918 2.4644e-05 deg
i 12.2460370921263 5.3685e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1332  
   data-arc span      8170 days (22.37 yr)  
   first obs. used      1997-09-21  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49672  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:13:28  

Additional Information
 Jupiter MOID = 2.15655 au 
 T_jup = 3.321 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.342452228337099E-15 -3.569124680758266E-15 3.586648500780924E-13 -6.955868827781214E-15 6.060729597021427E-14 -3.723476435412832E-15
q -3.569124680758266E-15 9.604653042169653E-15 -9.594370477387708E-13 1.851568953981825E-14 -1.624022998922218E-13 1.122057170292339E-14
tp 3.586648500780924E-13 -9.594370477387708E-13 4.598635806994164E-9 4.791648017915919E-12 1.05862370110988E-9 -5.530588621479969E-12
node -6.955868827781214E-15 1.851568953981825E-14 4.791648017915919E-12 3.701701932952042E-10 -3.599497210189215E-10 1.472753647972354E-11
peri 6.060729597021427E-14 -1.624022998922218E-13 1.05862370110988E-9 -3.599497210189215E-10 6.073272277721439E-10 -1.55361610050907E-11
i -3.723476435412832E-15 1.122057170292339E-14 -5.530588621479969E-12 1.472753647972354E-11 -1.55361610050907E-11 2.882053193421167E-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 14.2   n/a MPO358890  
diameter diameter 3.735 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.318   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27960 Dobiáš           Discovered 1997 Sept 21 by L. Šarounová at Ondřejov.
Václav Dobiáš (1909-1978), Czech composer, organizer of musical life and pedagogue, educated a number of composers, including the discoverer's father. His cycle of songs Praho jediná ("Prague, the Only One") is a beautiful apotheosis of the Czech city.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090607/MPCPages.arcLast Updated: 2009-06-08
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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