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1154 Astronomia (1927 CB)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001154
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07018660935456232 3.8405e-08  
a 3.399630396233086 2.71e-08 AU
q 3.161021865662779 1.319e-07 AU
i 4.533131357535606 4.4425e-06 deg
node 82.64002043913028 6.2548e-05 deg
peri 201.3278677375948 7.123e-05 deg
M 227.1441935804665 3.654e-05 deg
tp 2457845.436402751060
(2017-Apr-01.93640275)
0.0002325 JED
period 2289.528122164626
6.27
2.7376e-05
7.495e-08
d
yr
n .1572376405927871 1.8801e-09 deg/d
Q 3.638238926803393 2.9002e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1790  
   data-arc span      37942 days (103.88 yr)  
   first obs. used      1911-09-03  
   last obs. used      2015-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49937  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:00:02  

Additional Information
 Earth MOID = 2.14651 AU 
 T_jup = 3.138 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.51 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
diameter diameter 61.08 km 1.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
geometric albedo albedo 0.0296   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
B-V BV .658 mag .041 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=15.86 deg.
U-B UB .229 mag .066 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=15.86 deg.
Tholen spectral type spec_T FXU:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

1154 Astronomia (1927 CB)          Discovered 1927-Feb-08 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1927 CB = A911 RA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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