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52757 (1998 MH4)
Classification: Main-belt Asteroid          SPK-ID: 2052757
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1836680911762164 5.1609e-08  
a 2.306890556710732 9.1042e-09 au
q 1.883188371607232 1.1877e-07 au
i 25.8075333304362 6.2116e-06 deg
node 106.2713887059556 8.934e-06 deg
peri 198.0558037854461 1.4991e-05 deg
M 139.4340280962299 1.0621e-05 deg
tp 2458704.815673436433
(2019-Aug-09.31567344)
3.7682e-05 TDB
period 1279.790593439143
3.50
7.5761e-06
2.074e-08
d
yr
n .2812960197125552 1.6652e-09 deg/d
Q 2.730592741814232 1.0776e-08 au
  Orbit Determination Parameters
   # obs. used (total)      854  
   data-arc span      8266 days (22.63 yr)  
   first obs. used      1998-06-23  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46817  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:47:50  

Additional Information
 Earth MOID = .873616 au 
 Jupiter MOID = 2.50447 au 
 T_jup = 3.434 
[ 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 14.98   n/a MPCxxxxx  
diameter diameter 2.891 km 0.501 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.279   0.132 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52757 (1998 MH4)          Discovered 1998-Jun-23 by LONEOS at Anderson Mesa
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 MH4 = 2000 AC49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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