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2048 Dwornik (1973 QA)
Classification: Inner Main-belt Asteroid          SPK-ID: 2002048
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04252300060393138 2.8271e-08  
a 1.953569215020609 5.6601e-09 au
q 1.870497590110466 5.6861e-08 au
i 23.7507243402301 4.3555e-06 deg
node 157.6358852690027 7.6744e-06 deg
peri 105.6328282495423 5.4864e-05 deg
M 313.4609186124569 5.3116e-05 deg
tp 2458729.430877111078
(2019-Sep-02.93087711)
0.0001471 TDB
period 997.336311249407
2.73
4.3344e-06
1.187e-08
d
yr
n .3609614890578006 1.5687e-09 deg/d
Q 2.036640839930753 5.9008e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1924  
   data-arc span      16839 days (46.10 yr)  
   first obs. used      1973-08-27  
   last obs. used      2019-10-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40184  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:11:55  

Additional Information
 Earth MOID = .907345 au 
 Jupiter MOID = 3.03057 au 
 T_jup = 3.784 
[ 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 13.50   n/a PDS3 (MPC 17264)  
diameter diameter 2.613 km 0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.677 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Shevchenko, V.G.; Krugly, Yu.N.; Chiorny, V.G.; Bel'skaya, I.N.; Gaftonyuk, N.M. (2003) Planet. Space Sci. 51, 525-532.]
[Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html]
[Warner, B.D. (2011) Minor Planet Bull. 38, 190-195.]
[Warner, B.D. (2013) Minor Planet Bull. 40, 137-145.]
[Warner, Brian D. (2014) Minor Planet Bull. 41, 235-241.]
[Warner, B.D. (2016) Minor Planet Bull. 43, 227-233.]
geometric albedo albedo 1.000   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
B-V BV 0.722   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=21.39, mean=23.21, max.=25.25) deg.
U-B UB 0.238   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=21.39, mean=23.21, max.=25.25) deg.
Tholen spectral type spec_T E   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

2048 Dwornik (1973 QA)          Discovered 1973-Aug-27 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1973 QA = 1975 EW = 2016 FD6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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