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1252 Celestia (1933 DG)
Classification: Main-belt Asteroid          SPK-ID: 2001252
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2072318571269037 3.987e-08  
a 2.69503603299485 1.0882e-08 au
q 2.136538710853404 1.0924e-07 au
i 33.83614296739712 4.9365e-06 deg
node 140.8999910090609 7.393e-06 deg
peri 63.57913429948879 1.3149e-05 deg
M 226.2915881834708 1.2248e-05 deg
tp 2459600.707641913079
(2022-Jan-21.20764191)
5.6394e-05 TDB
period 1616.014640763214
4.42
9.788e-06
2.68e-08
d
yr
n .2227702589563041 1.3493e-09 deg/d
Q 3.253533355136296 1.3138e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2368  
   data-arc span      31989 days (87.58 yr)  
   first obs. used      1933-03-28  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37119  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:20:56  

Additional Information
 Earth MOID = 1.27625 au 
 Jupiter MOID = 2.07083 au 
 T_jup = 3.100 
[ 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 10.8   n/a MPO502165 IRAS observations used: 2
diameter diameter 19.037 km 0.304 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 10.636 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Worman, W.E. (1995) Minor Planet Bull. 22, 39-40.]
geometric albedo albedo 0.215   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.890   0.008 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=13.95, mean=13.97, max.=13.99) deg.
U-B UB 0.425   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=13.95, mean=13.97, max.=13.99) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1252 Celestia (1933 DG)          Discovered 1933-Feb-19 by Whipple, F. L. at Harvard
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1933 DG = 1934 PA1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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