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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2072318612416471 4.0205e-08  
a 2.695036034076991 1.095e-08 au
q 2.13653870062191 1.1001e-07 au
i 33.83614373579207 5.0464e-06 deg
node 140.8999910777219 7.431e-06 deg
peri 63.57913246741794 1.3257e-05 deg
M 226.2915892895989 1.2276e-05 deg
tp 2459600.707637309251
(2022-Jan-21.20763731)
5.6492e-05 TDB
period 1616.014641736535
4.42
9.8491e-06
2.697e-08
d
yr
n .2227702588221303 1.3577e-09 deg/d
Q 3.253533367532073 1.322e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2255  
   data-arc span      31724 days (86.86 yr)  
   first obs. used      1933-03-28  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37588  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:49:31  

Additional Information
 Earth MOID = 1.27625 au 
 Jupiter MOID = 2.07083 au 
 T_jup = 3.100 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456507.5 (2013-Aug-03.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2069301777401229 4.0217e-08  
q 2.137563495818127 1.0998e-07 au
tp 2456369.734356074573
(2013-Mar-18.23435607)
5.1957e-05 TDB
node 140.9382069091117 7.4283e-06 deg
peri 63.6592769003971 1.3278e-05 deg
i 33.83990873287754 5.0471e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2255  
   data-arc span      31724 days (86.86 yr)  
   first obs. used      1933-03-28  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37588  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:49:31  

Additional Information
 Jupiter MOID = 2.07083 au 
 T_jup = 3.100 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.617397740524371E-15 -4.409467069243673E-15 -6.593247025011023E-13 4.543434296996173E-15 -1.2256022691713E-13 3.464341816920558E-15
q -4.409467069243673E-15 1.209600206837371E-14 1.79929865013774E-12 -1.41984440928166E-14 3.359900863379055E-13 -7.470701306019907E-15
tp -6.593247025011023E-13 1.79929865013774E-12 2.699495135030128E-9 -9.282774057349328E-12 5.891301748371646E-10 -1.025062530669211E-12
node 4.543434296996173E-15 -1.41984440928166E-14 -9.282774057349328E-12 5.518023396713824E-11 -4.74486520761365E-11 5.094625917919836E-12
peri -1.2256022691713E-13 3.359900863379055E-13 5.891301748371646E-10 -4.74486520761365E-11 1.763137199701773E-10 -4.129423544482263E-12
i 3.464341816920558E-15 -7.470701306019907E-15 -1.025062530669211E-12 5.094625917919836E-12 -4.129423544482263E-12 2.547286468043604E-11

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

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