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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2070618869068718 3.8599e-08  
a 2.695548114539471 1.0656e-08 au
q 2.137402835694667 1.0634e-07 au
i 33.83672854612019 4.6917e-06 deg
node 140.896748950358 7.1552e-06 deg
peri 63.54085571635972 1.2857e-05 deg
M 270.8730431414288 1.2327e-05 deg
tp 2459600.698666064253
(2022-Jan-21.19866606)
5.634e-05 TDB
period 1616.475249028721
4.43
9.5851e-06
2.624e-08
d
yr
n .2227067814470468 1.3206e-09 deg/d
Q 3.253693393384275 1.2862e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2587  
   data-arc span      32073 days (87.81 yr)  
   first obs. used      1933-03-28  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35731  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:53:49  

Additional Information
 Earth MOID = 1.27668 au 
 Jupiter MOID = 2.06947 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 10.81   n/a E2021B10 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. 2020-October); 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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