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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 114 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06952955115043001 3.3034e-08  
a 3.189220194415075 1.2054e-08 au
q 2.967475145777508 1.0369e-07 au
i 17.05901315480812 3.7881e-06 deg
node 110.8427594172522 1.2421e-05 deg
peri 229.2804464351215 2.9985e-05 deg
M 57.63202998053357 2.6889e-05 deg
tp 2458867.467512454672
(2020-Jan-18.96751245)
0.00015557 TDB
period 2080.296244238041
5.70
1.1794e-05
3.229e-08
d
yr
n .1730522760866969 9.8108e-10 deg/d
Q 3.410965243052642 1.2892e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3181  
   data-arc span      41731 days (114.25 yr)  
   first obs. used      1906-10-18  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38124  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:48:15  

Additional Information
 Earth MOID = 1.98011 au 
 Jupiter MOID = 1.90204 au 
 T_jup = 3.125 
[ 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 8.33   n/a E2021B10  
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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1919-Oct-22 18:42 00:01 Jupiter 1.97385270592403 1.973852187083 1.97385322476809 4.99540687793541 4.90875208131613 2422254.279273399 1.38710449341074 150.414269284239 13.7034453235003 -81.6107365599894 5139956.06823786 T 114 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:24 2021-Feb-24 00:48
1930-Nov-09 08:36 00:01 Jupiter 1.94640969549214 1.94640936748812 1.94641002349616 5.09596511861808 5.0098420122496 2426289.858586660 1.22074351822793 119.02225648637 15.7993121187901 89.9795996833635 5178048.69934291 T 114 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:24 2021-Feb-24 00:48
2062-Mar-29 07:12 < 00:01 Jupiter 1.99728073964471 1.99728040681777 1.99728107247198 4.96176237534157 4.87554203635245 2474277.800073485 0.910573800506694 97.245830581599 13.958515345959 -85.0274455145692 5210094.53922865 T 114 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:24 2021-Feb-24 00:48
2073-Apr-17 02:21 00:01 Jupiter 1.95393153337856 1.95393116975016 1.95393189700729 5.17201807345949 5.08751195738349 2478314.597955912 1.1236708471946 103.201289663529 16.1312456986789 86.1779185253761 5743541.61496876 T 114 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:24 2021-Feb-24 00:48
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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