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109988 (2001 SR57)
Classification: Main-belt Asteroid          SPK-ID: 2109988
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .256942322769946 7.0019e-08  
a 2.567000908176094 1.4381e-08 au
q 1.907429732276767 1.8401e-07 au
i 3.365548052890861 7.8276e-06 deg
node 180.1115544663713 8.355e-05 deg
peri 122.7709650273577 8.4344e-05 deg
M 290.8205207845909 1.2313e-05 deg
tp 2459489.177042898252
(2021-Oct-01.67704290)
5.2555e-05 TDB
period 1502.233561483979
4.11
1.2624e-05
3.456e-08
d
yr
n .2396431615097021 2.0138e-09 deg/d
Q 3.22657208407542 1.8076e-08 au
  Orbit Determination Parameters
   # obs. used (total)      434  
   data-arc span      10192 days (27.90 yr)  
   first obs. used      1992-04-29  
   last obs. used      2020-03-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60616  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:08:37  

Additional Information
 Earth MOID = .892796 au 
 Jupiter MOID = 2.03942 au 
 T_jup = 3.382 
[ 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 16.17   n/a E2021B55  

109988 (2001 SR57)          Discovered 2001-Sep-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 SR57 = 1992 HG3 = 2000 GX16 = 2001 UK181 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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