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57 Mnemosyne
Classification: Main-belt Asteroid          SPK-ID: 2000057
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1146878211246811 7.1311e-08  
a 3.151491338068777 8.5743e-09 AU
q 2.790053663212363 2.2629e-07 AU
i 15.21589896038907 8.5181e-06 deg
node 199.2267270175065 2.6865e-05 deg
peri 211.0931565682676 4.0112e-05 deg
M 185.7217501860592 3.1808e-05 deg
tp 2457789.766477409977
(2017-Feb-05.26647741)
0.00018306 JED
period 2043.490408285612
5.59
8.3396e-06
2.283e-08
d
yr
n .1761691655318423 7.1896e-10 deg/d
Q 3.51292901292519 9.5576e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1548  
   data-arc span      56329 days (154.22 yr)  
   first obs. used      1859-12-22  
   last obs. used      2014-03-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56277  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 10:32:29  

Additional Information
 Earth MOID = 1.80826 AU 
 T_jup = 3.143 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.03 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
diameter diameter 112.59 km 2.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
rotation period rot_per 12.463 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Harris, A.W.; Young, J.W.; Dockweiler, T.; Gibson, J.; et al. (1992) Icarus 95, 115-147.]
[Ditteon, R.; Hawkins, S. (2007) Minor Planet Bul. 34, 59-64.]
geometric albedo albedo 0.2149   0.011 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
B-V BV .817 mag .011 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=12.12, mean=12.51, max.=12.91) deg.
U-B UB .410 mag .029 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=12.12, mean=12.51, max.=12.91) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

57 Mnemosyne          Discovered 1859-Sep-22 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1959 NT 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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