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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1762874911684505 3.2139e-08  
a 2.347102319245003 8.6074e-09 au
q 1.93333753986965 7.3936e-08 au
i 12.30859474337294 3.5033e-06 deg
node 95.2527848683394 2.1033e-05 deg
peri 169.2376579317082 2.508e-05 deg
M 49.7664961595592 1.5626e-05 deg
tp 2458818.935463619856
(2019-Dec-01.43546362)
5.6539e-05 TDB
period 1313.398333032869
3.60
7.2248e-06
1.978e-08
d
yr
n .2740981094202369 1.5078e-09 deg/d
Q 2.760867098620357 1.0125e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1556  
   data-arc span      8176 days (22.38 yr)  
   first obs. used      1998-06-24  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45433  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:48:13  

Additional Information
 Earth MOID = .918636 au 
 Jupiter MOID = 2.33687 au 
 T_jup = 3.509 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457227.5 (2015-Jul-24.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1757128394435814 3.2177e-08  
q 1.935277159374969 7.3924e-08 au
tp 2457505.178180968345
(2016-Apr-26.67818097)
5.3804e-05 TDB
node 95.27697705523488 2.1034e-05 deg
peri 169.181096226104 2.5092e-05 deg
i 12.30679272866784 3.5027e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1556  
   data-arc span      8176 days (22.38 yr)  
   first obs. used      1998-06-24  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45433  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:48:13  

Additional Information
 Jupiter MOID = 2.33687 au 
 T_jup = 3.509 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.035363312963435E-15 -2.368477245471778E-15 4.483737735565663E-14 7.36948243040196E-16 -1.073524214347613E-14 2.121366845378888E-15
q -2.368477245471778E-15 5.464754504329432E-15 3.028662418991452E-14 -1.926552392888891E-15 5.585879680923471E-14 -5.038958313146218E-15
tp 4.483737735565663E-14 3.028662418991452E-14 2.894887023483788E-9 -1.242750039811317E-11 7.593881579629156E-10 -5.411590734901061E-12
node 7.36948243040196E-16 -1.926552392888891E-15 -1.242750039811317E-11 4.424223142746579E-10 -4.352502367302871E-10 -2.226031422642298E-12
peri -1.073524214347613E-14 5.585879680923471E-14 7.593881579629156E-10 -4.352502367302871E-10 6.296209109831607E-10 6.973557469624882E-13
i 2.121366845378888E-15 -5.038958313146218E-15 -5.411590734901061E-12 -2.226031422642298E-12 6.973557469624882E-13 1.226903268821E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO337632  
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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