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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07103118938262799 3.3329e-08  
a 3.393642608588095 1.8464e-08 au
q 3.152588137760518 1.1276e-07 au
i 4.531952023050001 3.8597e-06 deg
node 82.50549247108465 5.2957e-05 deg
peri 204.5591559040475 6.1023e-05 deg
M 179.435143120111 3.0575e-05 deg
tp 2457862.341915862177
(2017-Apr-18.84191586)
0.00019547 TDB
period 2283.481948769338
6.25
1.8636e-05
5.102e-08
d
yr
n .1576539723443046 1.2867e-09 deg/d
Q 3.634697079415672 1.9776e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3039  
   data-arc span      39679 days (108.64 yr)  
   first obs. used      1911-09-03  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41094  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:20:01  

Additional Information
 Earth MOID = 2.13695 au 
 Jupiter MOID = 1.48044 au 
 T_jup = 3.139 
[ 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 MPO502164 IRAS observations used: 17
diameter diameter 55.715 km 0.500 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 18.1154 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Brincat, S.M. (2017) Minor Planet Bull. 44, 1-2.]
geometric albedo albedo 0.036   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.658   0.041 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=15.86 deg.
U-B UB 0.229   0.066 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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