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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 ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2069725261044333 1.4492e-08  
a 2.695712558252198 1.0345e-08 au
q 2.137774120419296 4.272e-08 au
i 33.8374261402838 4.1399e-07 deg
node 140.895879022469 2.1357e-06 deg
peri 63.51490381690778 5.7627e-06 deg
M 314.536638441955 8.1124e-06 deg
tp 2459600.658677208496
(2022-Jan-21.15867721)
3.7101e-05 TDB
period 1616.623172512702
4.43
9.3063e-06
2.548e-08
d
yr
n .2226864034371445 1.2819e-09 deg/d
Q 3.253650996085099 1.2487e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2786  
   data-arc span      32222 days (88.22 yr)  
   first obs. used      1933-03-28  
   last obs. used      2021-06-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .35552  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:29:15  

Additional Information
 Earth MOID = 1.27788 au 
 Jupiter MOID = 2.06877 au 
 T_jup = 3.100 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456913.5 (2014-Sep-13.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2071312928295586 1.4502e-08  
q 2.136982339107658 4.2741e-08 au
tp 2456369.774568770614
(2013-Mar-18.27456877)
3.036e-05 TDB
node 140.9349393204141 2.1353e-06 deg
peri 63.64507621771055 5.7615e-06 deg
i 33.84376228935964 4.1401e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2786  
   data-arc span      32222 days (88.22 yr)  
   first obs. used      1933-03-28  
   last obs. used      2021-06-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .35552  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:29:15  

Additional Information
 Jupiter MOID = 2.06877 au 
 T_jup = 3.100 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.102996539558372E-16 -6.098381592399949E-16 -1.153504702482931E-13 -6.790496881251477E-15 -8.13902568939624E-15 -5.411896373568518E-16
q -6.098381592399949E-16 1.826757351854611E-15 3.35735544206785E-13 1.644995076692435E-14 3.266842936987311E-14 1.347408437820578E-15
tp -1.153504702482931E-13 3.35735544206785E-13 9.217358213265244E-10 -2.267499380791574E-11 1.62869343399645E-10 -1.599067289670082E-12
node -6.790496881251477E-15 1.644995076692435E-14 -2.267499380791574E-11 4.559408803635495E-12 -7.802583349851051E-12 -1.294427214376797E-13
peri -8.13902568939624E-15 3.266842936987311E-14 1.62869343399645E-10 -7.802583349851051E-12 3.319440318961031E-11 -1.307823907611028E-13
i -5.411896373568518E-16 1.347408437820578E-15 -1.599067289670082E-12 -1.294427214376797E-13 -1.307823907611028E-13 1.714074434647597E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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

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