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46821 (1998 MV31)
Classification: Main-belt Asteroid          SPK-ID: 2046821
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1760311447179124 3.0713e-08  
a 2.346943779721335 8.3042e-09 au
q 1.933808579588405 7.0578e-08 au
i 12.30815457120852 3.3226e-06 deg
node 95.2535198817976 2.0668e-05 deg
peri 169.2016640447851 2.4784e-05 deg
M 158.3827771153122 1.5818e-05 deg
tp 2458818.726113419696
(2019-Dec-01.22611342)
5.6252e-05 TDB
period 1313.265261269373
3.60
6.9701e-06
1.908e-08
d
yr
n .2741258834883304 1.4549e-09 deg/d
Q 2.760078979854266 9.766e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1653  
   data-arc span      8268 days (22.64 yr)  
   first obs. used      1998-06-24  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45509  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:26:00  

Additional Information
 Earth MOID = .91907 au 
 Jupiter MOID = 2.33545 au 
 T_jup = 3.509 
[ 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 14.63   n/a E2021B10  
diameter diameter 3.865 km 0.874 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.132   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

46821 (1998 MV31)          Discovered 1998-Jun-24 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 MV31 = 1999 YG23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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