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1028 Lydina (A923 VF)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001028
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 56 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1054772905120029 3.7506e-08  
a 3.40460659071729 1.4969e-08 au
q 3.045497912269123 1.2359e-07 au
i 9.393939273234052 4.3438e-06 deg
node 62.82586001369302 2.0865e-05 deg
peri 24.24405122332531 2.8058e-05 deg
M 174.8144092412041 1.8154e-05 deg
tp 2458282.273312480887
(2018-Jun-12.77331248)
0.00011568 TDB
period 2294.556891780152
6.28
1.5133e-05
4.143e-08
d
yr
n .1568930372960622 1.0347e-09 deg/d
Q 3.763715269165457 1.6548e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3016  
   data-arc span      41689 days (114.14 yr)  
   first obs. used      1907-05-09  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39233  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:51:58  

Additional Information
 Earth MOID = 2.06452 au 
 Jupiter MOID = 1.51998 au 
 T_jup = 3.116 
[ 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 9.38   n/a E2021B10 IRAS observations used: 36
diameter diameter 88.526 km 0.762 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.680 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2012) Minor Planet Bull. 39, 80-82.]
[Strabla, L.; Quadri, U.; Girelli, R. (2012) Minor Planet Bull. 39, 177-179.]
geometric albedo albedo 0.038   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.684   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=19.32 deg.
U-B UB 0.276   0.058 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=19.32 deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

1028 Lydina (A923 VF)          Discovered 1923-Nov-06 by Albitzkij, V. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A923 VF = A907 JF = A914 JA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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