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JPL Small-Body Database Browser
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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1058939670369716 4.1336e-08  
a 3.405905465811019 1.7917e-08 au
q 3.045240624683386 1.3964e-07 au
i 9.393957010548871 4.9053e-06 deg
node 62.83186154538865 2.3566e-05 deg
peri 24.60889376040412 3.1403e-05 deg
M 49.5057092598414 1.9195e-05 deg
tp 2458284.781451598501
(2018-Jun-15.28145160)
0.00012282 TDB
period 2295.870095062726
6.29
1.8116e-05
4.96e-08
d
yr
n .1568032968303306 1.2373e-09 deg/d
Q 3.766570306938652 1.9814e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2334  
   data-arc span      40911 days (112.01 yr)  
   first obs. used      1907-05-09  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42739  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:17:58  

Additional Information
 Earth MOID = 2.06436 au 
 Jupiter MOID = 1.51634 au 
 T_jup = 3.115 
[ 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 9.43   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 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. 2019-January); 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

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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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