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JPL Small-Body Database Browser
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1051 Merope (1925 SA)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001051
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1000031925404632 3.3655e-08  
a 3.214630941547588 1.3008e-08 au
q 2.893157584553474 1.1039e-07 au
i 23.5059195029215 3.7194e-06 deg
node 180.6956587984995 8.3664e-06 deg
peri 153.0516197428371 1.7767e-05 deg
M 162.1419079873663 1.5373e-05 deg
tp 2458052.326340838601
(2017-Oct-25.82634084)
9.0144e-05 TDB
period 2105.208465443124
5.76
1.2778e-05
3.498e-08
d
yr
n .1710044425097939 1.038e-09 deg/d
Q 3.536104298541702 1.4309e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2726  
   data-arc span      34473 days (94.38 yr)  
   first obs. used      1925-09-16  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42306  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:44:10  

Additional Information
 Earth MOID = 1.90046 au 
 Jupiter MOID = 1.95886 au 
 T_jup = 3.053 
[ 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 10.1   n/a MPO452173  
diameter diameter 60.439 km 0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 27.2 h n/a LCDB (Rev. 2019-August); 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:
[Carbo, L.; Green, D.; Kragh, K.; Krotz, J.; et al. (2009) Minor Planet Bull. 36, 152-157.]
geometric albedo albedo 0.053   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1051 Merope (1925 SA)          Discovered 1925-Sep-16 by Reinmuth, K. at Heidelberg
Sept. 15, given by some authorities, refers to local mean time.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1925 SA = 1926 XA = 1931 TM3 = 1936 OG = A908 TE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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