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315 Constantia (A891 RB)
Classification: Main-belt Asteroid          SPK-ID: 2000315
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1682371991461237 1.9542e-08  
a 2.241491916687291 4.4287e-09 au
q 1.864389594715145 4.4572e-08 au
i 2.428954800777698 5.474e-07 deg
node 161.6249990008366 1.3106e-05 deg
peri 172.9348950625115 1.5651e-05 deg
M 196.4559310923432 5.3563e-06 deg
tp 2459757.347777044826
(2022-Jun-26.84777704)
1.8592e-05 TDB
period 1225.756464756467
3.36
3.6327e-06
9.946e-09
d
yr
n .2936961870900879 8.7042e-10 deg/d
Q 2.618594238659437 5.1738e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2974  
   data-arc span      33762 days (92.44 yr)  
   first obs. used      1928-10-07  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41696  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:41:30  

Additional Information
 Earth MOID = .852553 au 
 Jupiter MOID = 2.73939 au 
 T_jup = 3.614 
[ 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 12.67   n/a E2021B10  
diameter diameter 6.534 km 0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.345 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Oey, J. (2009) Minor Planet Bull. 36, 4-6.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.217   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

315 Constantia (A891 RB)          Discovered 1891-Sep-04 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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