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2237 Melnikov (1938 TB)
Classification: Main-belt Asteroid          SPK-ID: 2002237
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .217757023532212 2.1207e-08  
a 3.14092703263311 1.3558e-08 au
q 2.456968110875061 6.9049e-08 au
i 2.400769284306271 3.0297e-07 deg
node 118.47949828225 1.8956e-05 deg
peri 266.1359575018115 1.9833e-05 deg
M 227.6870561612521 6.235e-06 deg
tp 2459947.782873964950
(2023-Jan-03.28287396)
3.8121e-05 TDB
period 2033.223861720161
5.57
1.3165e-05
3.604e-08
d
yr
n .1770587129030792 1.1465e-09 deg/d
Q 3.824885954391159 1.6511e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2780  
   data-arc span      30069 days (82.32 yr)  
   first obs. used      1938-09-22  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44581  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:31:13  

Additional Information
 Earth MOID = 1.46105 au 
 Jupiter MOID = 1.63373 au 
 T_jup = 3.172 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456900.5 (2014-Aug-31.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2177100433791222 2.1263e-08  
q 2.457357558157085 6.9271e-08 au
tp 2457916.128052795109
(2017-Jun-11.62805280)
3.1352e-05 TDB
node 118.4803404656213 1.8958e-05 deg
peri 266.6096778906868 1.983e-05 deg
i 2.400562291782433 3.0321e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2780  
   data-arc span      30069 days (82.32 yr)  
   first obs. used      1938-09-22  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44581  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:31:13  

Additional Information
 Jupiter MOID = 1.63373 au 
 T_jup = 3.172 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.521329261688428E-16 -1.455812871344253E-15 -6.741234740174882E-14 -2.056786611252415E-14 3.69638027258212E-14 3.04185622474851E-16
q -1.455812871344253E-15 4.798501564736196E-15 3.296552605972918E-13 5.549074254231731E-14 -1.004008533501544E-13 -8.391650218392196E-16
tp -6.741234740174882E-14 3.296552605972918E-13 9.829739754275546E-10 -7.22467837815747E-11 1.930221887496817E-10 7.171465569828681E-13
node -2.056786611252415E-14 5.549074254231731E-14 -7.22467837815747E-11 3.594198868773686E-10 -3.67675794913232E-10 -4.584005115212685E-12
peri 3.69638027258212E-14 -1.004008533501544E-13 1.930221887496817E-10 -3.67675794913232E-10 3.932458428917441E-10 4.645010124426402E-12
i 3.04185622474851E-16 -8.391650218392196E-16 7.171465569828681E-13 -4.584005115212685E-12 4.645010124426402E-12 9.193833995384734E-14

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 12.08   n/a E2021B10  
diameter diameter 21.353 km 0.498 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 31.725 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.074   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2237 Melnikov (1938 TB)          Discovered 1938-Oct-02 by Neujmin, G. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1938 TB = 1949 SO1 = 1972 TB2 = 1977 RU3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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