Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
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 ]  
618 Elfriede (A906 UM)
Classification: Main-belt Asteroid          SPK-ID: 2000618
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 112 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06949086323489737 3.421e-08  
a 3.188708173670629 1.2453e-08 au
q 2.967122090078083 1.0824e-07 au
i 17.0590718050963 3.9991e-06 deg
node 110.8417618396291 1.254e-05 deg
peri 229.1246409769456 3.035e-05 deg
M 23.16175974226726 2.7522e-05 deg
tp 2458866.689670241694
(2020-Jan-18.18967024)
0.00015903 TDB
period 2079.795285376485
5.69
1.2183e-05
3.336e-08
d
yr
n .1730939590695498 1.014e-09 deg/d
Q 3.410294257263174 1.3318e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2981  
   data-arc span      41667 days (114.08 yr)  
   first obs. used      1906-10-18  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39236  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:54:54  

Additional Information
 Earth MOID = 1.9815 au 
 Jupiter MOID = 1.9025 au 
 T_jup = 3.125 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455832.5 (2011-Sep-28.0) TDB
Reference: JPL 112 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07474007031819581 3.4462e-08  
q 2.951436839807316 1.1002e-07 au
tp 2456781.116471678617
(2014-May-03.61647168)
0.00014676 TDB
node 111.0990993032047 1.2571e-05 deg
peri 228.3867811580675 2.8308e-05 deg
i 17.03597087696811 3.9954e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2981  
   data-arc span      41667 days (114.08 yr)  
   first obs. used      1906-10-18  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39236  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:54:54  

Additional Information
 Jupiter MOID = 1.9025 au 
 T_jup = 3.125 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.187654915345133E-15 -3.770899082206599E-15 -3.706151514129185E-13 -7.623737498347298E-16 -6.956583063876555E-14 -5.718408714967427E-17
q -3.770899082206599E-15 1.210420059455958E-14 1.042635775996017E-12 3.444149102505832E-15 1.857817547619471E-13 4.127069154291382E-16
tp -3.706151514129185E-13 1.042635775996017E-12 2.153772937992192E-8 9.753480885854556E-13 3.73842306898872E-9 1.325241601994157E-12
node -7.623737498347298E-16 3.444149102505832E-15 9.753480885854556E-13 1.580421151884575E-10 -1.506361661467552E-10 -1.60191281114781E-13
peri -6.956583063876555E-14 1.857817547619471E-13 3.73842306898872E-9 -1.506361661467552E-10 8.013536401647236E-10 2.676801488006609E-13
i -5.718408714967427E-17 4.127069154291382E-16 1.325241601994157E-12 -1.60191281114781E-13 2.676801488006609E-13 1.596293236620184E-11

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 8.3   n/a MPO452165  
diameter diameter 131.292 km 1.372 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 14.791 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2006) Minor Planet Bull. 33, 85-88.]
[Carbo, L.; Kragh, K.; Krotz, J.; Meiers, A.; et al. (2009) Minor Planet Bull. 36, 91-94.]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
[Aznar, A.; Garceran, A.C.; Mansego, E.A.; Rodriguez, P.B.; et al. (2016) Minor Planet Bull. 43, 174-181.]
[Klinglesmith III, D.A.; Hendrickx, S.; Kimber, C.; Madden, K. (2017) Minor Planet Bull. 44, 244-246.]
geometric albedo albedo 0.050   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.696   0.031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=4.46, mean=6.59, max.=11.35) deg.
U-B UB 0.317   0.055 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=4.46, mean=6.59, max.=11.35) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

618 Elfriede (A906 UM)          Discovered 1906-Oct-17 by Lohnert, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-15 21:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin