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JPL Small-Body Database Browser
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978 Aidamina (A922 KE)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000978
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2321042293453819 3.7547e-08  
a 3.204512987877868 1.6818e-08 au
q 2.460731970399208 1.2054e-07 au
i 21.6057391717126 4.795e-06 deg
node 216.5669650375356 1.0403e-05 deg
peri 132.4479690157184 1.4192e-05 deg
M 326.4185136958027 1.1895e-05 deg
tp 2459195.951448888116
(2020-Dec-12.45144889)
7.0336e-05 TDB
period 2095.277170353454
5.74
1.6494e-05
4.516e-08
d
yr
n .1718149775570128 1.3525e-09 deg/d
Q 3.948294005356527 2.0721e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2544  
   data-arc span      41215 days (112.84 yr)  
   first obs. used      1906-11-17  
   last obs. used      2019-09-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40716  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:42:07  

Additional Information
 Earth MOID = 1.50742 au 
 Jupiter MOID = 1.77178 au 
 T_jup = 3.043 
[ 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 9.6   n/a MPO492761 IRAS observations used: 17
diameter diameter 92.105 km 0.764 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 10.099 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[LeCrone, C.; Duncan, A.; Kirkpatrick, E. (2004) Minor Planet Bull. 31, 77-78.]
[Pilcher, F. (2015) Minor Planet Bull. 42, 28.]
geometric albedo albedo 0.027   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.677   0.025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=.94, mean=1.01, max.=1.08) deg.
U-B UB 0.252   0.098 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=.94, mean=1.01, max.=1.08) deg.
Tholen spectral type spec_T PF   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

978 Aidamina (A922 KE)          Discovered 1922-May-18 by Belyavskij, S. at Simeis
Independent discovery May 30 by M. Wolf, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A922 KE = 1929 YA = 1946 QD = 1966 BD = A906 VB = A923 YA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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