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843 Nicolaia (A916 SO)
Classification: Main-belt Asteroid          SPK-ID: 2000843
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2095295006232725 1.5727e-08  
a 2.27962077825877 4.8778e-09 au
q 1.801972974979774 3.5948e-08 au
i 7.998026297232189 8.9768e-07 deg
node 4.045100023244301 2.7938e-06 deg
peri 317.1008541509597 5.2409e-06 deg
M 185.8326441745619 4.4675e-06 deg
tp 2460004.714255228107
(2023-Mar-01.21425523)
1.6503e-05 TDB
period 1257.165160740981
3.44
4.035e-06
1.105e-08
d
yr
n .2863585559337436 9.191e-10 deg/d
Q 2.757268581537766 5.8998e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3156  
   data-arc span      38241 days (104.70 yr)  
   first obs. used      1916-09-30  
   last obs. used      2021-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39701  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:38:03  

Additional Information
 Earth MOID = .798915 au 
 Jupiter MOID = 2.59487 au 
 T_jup = 3.564 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.94   n/a MPO636073  
rotation period rot_per 22.6308 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

843 Nicolaia (A916 SO)          Discovered 1916-Sep-30 by Thiele, H. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A916 SO = 1978 RS5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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