Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1144948529104624 5.0531e-08  
a 3.152023211066437 9.2187e-09 AU
q 2.791132777145021 1.5976e-07 AU
i 15.21424879487795 6.1057e-06 deg
node 199.2192037600913 2.0153e-05 deg
peri 211.0904631586918 2.798e-05 deg
M 220.9548759718531 2.1657e-05 deg
tp 2457789.970307043219
(2017-Feb-05.47030704)
0.00012442 JED
period 2044.007745845343
5.60
8.9671e-06
2.455e-08
d
yr
n .1761245771850607 7.7267e-10 deg/d
Q 3.512913644987851 1.0274e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1639  
   data-arc span      56496 days (154.68 yr)  
   first obs. used      1859-12-22  
   last obs. used      2014-08-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5246  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 13:44:24  

Additional Information
 Earth MOID = 1.81025 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. 2014-Mar-01) 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Nov-26 20:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin