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JPL Small-Body Database Browser
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974 Lioba (A922 FC)
Classification: Main-belt Asteroid          SPK-ID: 2000974
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .111556491655719 5.7814e-08  
a 2.532708751196521 8.524e-09 au
q 2.2501686485273 1.454e-07 au
i 5.457184237491552 4.3724e-06 deg
node 86.67569365737896 4.4402e-05 deg
peri 302.1004800540958 4.756e-05 deg
M 150.286609803019 1.7202e-05 deg
tp 2457985.897828704246
(2017-Aug-20.39782870)
6.9988e-05 TDB
period 1472.232169961605
4.03
7.4323e-06
2.035e-08
d
yr
n .2445266496312118 1.2345e-09 deg/d
Q 2.815248853865743 9.4749e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2462  
   data-arc span      41319 days (113.13 yr)  
   first obs. used      1906-03-27  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49137  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:16:58  

Additional Information
 Earth MOID = 1.26049 au 
 Jupiter MOID = 2.60146 au 
 T_jup = 3.435 
[ 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 10.4   n/a MPO473775 IRAS observations used: 2
diameter diameter 25.001 km 0.481 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 38.7 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
geometric albedo albedo 0.214   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.912   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.27, mean=12.96, max.=20.65) deg.
U-B UB 0.468   0.031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.27, mean=12.96, max.=20.65) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

974 Lioba (A922 FC)          Discovered 1922-Mar-18 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A922 FC = 1930 DA1 = A906 FG = A916 UO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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