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20200 Donbacky (1997 DW)
Classification: Main-belt Asteroid          SPK-ID: 2020200
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1095052305486925 3.0773e-08  
a 2.767965755602481 1.3887e-08 au
q 2.464859027384346 8.7161e-08 au
i 8.292068009332123 4.7439e-06 deg
node 337.7699266836443 2.3473e-05 deg
peri 265.8518211699504 3.1888e-05 deg
M 302.5223862941563 2.2006e-05 deg
tp 2459269.056534868335
(2021-Feb-23.55653487)
0.00010317 TDB
period 1682.052303830619
4.61
1.2659e-05
3.466e-08
d
yr
n .2140242602326661 1.6107e-09 deg/d
Q 3.071072483820617 1.5408e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1475  
   data-arc span      10759 days (29.46 yr)  
   first obs. used      1990-11-13  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48821  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:09:52  

Additional Information
 Earth MOID = 1.46962 au 
 Jupiter MOID = 2.02202 au 
 T_jup = 3.315 
[ 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 14.3   n/a MPO365493  
diameter diameter 4.103 km 1.519 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.182   0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20200 Donbacky           Discovered 1997 Feb. 28 by M. Tombelli and G. Forti at Montelupo.
Don Backy is the artistic name of the Italian singer and composer Aldo Caponi (b. 1939). Among his many beautiful songs is L´Immensita.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020427/MPCPages.arcLast Updated: 2003-10-02

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2093-Dec-20 23:47 00:01 Juno 0.0250162542404657 0.0250015307171592 0.0250309801409711 9.51062171612273 9.51062166498814 2485867.490913399 1.27513541267456 829.030541692885 42.6749991500114 27.7219170078418 40979.4323682034 T 30 CATAB v2.0f-lin.ifort 2020-May-20 05:10:07 2020-May-20 05:10
2176-Nov-07 18:11 00:02 Juno 0.0490771231567698 0.0490599950227567 0.0490942669836119 9.30030215723203 9.30030213057758 2516139.257335942 2.26050555972588 1627.5758803635 42.4859655761887 -58.3693816287415 147124.989501032 T 30 CATAB v2.0f-lin.ifort 2020-May-20 05:10:07 2020-May-20 05:10

Alternate Designations
 1997 DW = 1999 VR44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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