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4798 Mercator (1989 SU1)
Classification: Main-belt Asteroid          SPK-ID: 2004798
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 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1093181822006778 1.3954e-08  
a 2.197275539341152 5.6127e-09 au
q 1.957073371586364 2.9692e-08 au
i 3.659097569005356 3.5716e-07 deg
node 93.59207523644196 1.5825e-05 deg
peri 161.3087464153288 1.8982e-05 deg
M 317.6317560930397 1.0093e-05 deg
tp 2459340.511326838990
(2021-May-06.01132684)
3.3543e-05 TDB
period 1189.666434434301
3.26
4.5583e-06
1.248e-08
d
yr
n .3026058309959664 1.1595e-09 deg/d
Q 2.437477707095941 6.2263e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2754  
   data-arc span      24170 days (66.17 yr)  
   first obs. used      1954-12-22  
   last obs. used      2021-02-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45096  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:47:46  

Additional Information
 Earth MOID = .940947 au 
 Jupiter MOID = 2.59049 au 
 T_jup = 3.657 
[ 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 13.52   n/a E2021B10  
diameter diameter 5.018 km 0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.306   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4798 Mercator (1989 SU1)          Discovered 1989-Sep-26 by Elst, E. W. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1989 SU1 = 1975 GH = 1985 JO1 = 1986 WN8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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