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4023 Jarnik (1981 UN)
Classification: Main-belt Asteroid          SPK-ID: 2004023
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09337962061132618 3.2139e-08  
a 2.233709187806701 6.2294e-09 au
q 2.025126271293277 7.3527e-08 au
i 1.852817704191515 2.9623e-06 deg
node 244.7188209226971 9.8576e-05 deg
peri 127.6051740421051 0.00010007 deg
M 223.9583888354255 1.9358e-05 deg
tp 2459461.294873406421
(2021-Sep-03.79487341)
6.6565e-05 TDB
period 1219.378049159039
3.34
5.1009e-06
1.397e-08
d
yr
n .2952324754806591 1.235e-09 deg/d
Q 2.442292104320124 6.811e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2689  
   data-arc span      14202 days (38.88 yr)  
   first obs. used      1981-10-04  
   last obs. used      2020-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47822  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:55:06  

Additional Information
 Earth MOID = 1.02574 au 
 Jupiter MOID = 2.93325 au 
 T_jup = 3.633 
[ show covariance matrix ]

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 13.5   n/a MPO358668  
diameter diameter 5.580 km 0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.776 h n/a LCDB (Rev. 2020-October); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.195   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4023 Jarnik (1981 UN)          Discovered 1981-Oct-25 by Brozek, L. at Klet
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1981 UN = 1981 XE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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