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1911 Schubart (1973 UD)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001911
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 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1713046374765373 3.254e-08  
a 3.971448517279747 2.5151e-08 au
q 3.291120968770409 1.2989e-07 au
i 1.64526002255923 3.7857e-06 deg
node 284.8271874449694 0.00013378 deg
peri 181.5142603206819 0.0001343 deg
M 261.6633355861872 1.3378e-05 deg
tp 2459790.150299842011
(2022-Jul-29.65029984)
0.00011241 TDB
period 2890.825203780184
7.91
2.7461e-05
7.518e-08
d
yr
n .1245319154991614 1.183e-09 deg/d
Q 4.651776065789085 2.946e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2795  
   data-arc span      33701 days (92.27 yr)  
   first obs. used      1928-02-27  
   last obs. used      2020-06-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4584  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:38:36  

Additional Information
 Earth MOID = 2.30795 au 
 Jupiter MOID = .502454 au 
 T_jup = 3.031 
[ 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 10.0   n/a MPO502171 IRAS observations used: 11
diameter diameter 67.476 km 0.672 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 11.915 h n/a LCDB (Rev. 2019-August); 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:
[Stephens, R.D. (2016) Minor Planet Bull. 43, 336-339.]
geometric albedo albedo 0.035   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
B-V BV 0.701   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=.49 deg.
U-B UB 0.217   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=.49 deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

1911 Schubart (1973 UD)          Discovered 1973-Oct-25 by Wild, P. at Zimmerwald
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1973 UD = 1928 DW = 1933 UX1 = 1941 SU1 = 1951 AH1 = 1952 DS2 = 1960 EF = 1968 FM = 1972 RO = 1972 TY4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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