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181827 (1998 SS50)
Classification: Main-belt Asteroid          SPK-ID: 2181827
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2281230381427663 5.0441e-08  
a 2.419280387169761 1.6502e-08 au
q 1.867386795129387 1.222e-07 au
i 2.61475067923529 5.9767e-06 deg
node 2.124512435701592 0.00011595 deg
peri 319.2056931704509 0.0001168 deg
M 4.437462726132703 1.8395e-05 deg
tp 2459183.558184370068
(2020-Nov-30.05818437)
7.0145e-05 TDB
period 1374.446165115338
3.76
1.4063e-05
3.85e-08
d
yr
n .2619236817978901 2.68e-09 deg/d
Q 2.971173979210135 2.0267e-08 au
  Orbit Determination Parameters
   # obs. used (total)      294  
   data-arc span      9945 days (27.23 yr)  
   first obs. used      1993-03-20  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53744  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:12  

Additional Information
 Earth MOID = .853805 au 
 Jupiter MOID = 2.35635 au 
 T_jup = 3.477 
[ 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 16.93   n/a E2021B55  

181827 (1998 SS50)          Discovered 1998-Sep-26 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 1998 SS50 = 1994 PN26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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