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698 Ernestina (A910 ED)
Classification: Main-belt Asteroid          SPK-ID: 2000698
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 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1109122330577185 2.1881e-08  
a 2.867586431146784 9.3045e-09 au
q 2.549536016582281 6.5654e-08 au
i 11.53075913740128 6.0912e-07 deg
node 40.62772964175031 1.4969e-06 deg
peri 98.56662450864654 6.2112e-06 deg
M 310.6422410682147 6.7294e-06 deg
tp 2459443.679036663723
(2021-Aug-17.17903666)
3.3483e-05 TDB
period 1773.671558304151
4.86
8.6326e-06
2.363e-08
d
yr
n .2029688068879023 9.8786e-10 deg/d
Q 3.185636845711288 1.0336e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3311  
   data-arc span      41024 days (112.32 yr)  
   first obs. used      1908-11-28  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3979  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:45:55  

Additional Information
 Earth MOID = 1.59326 au 
 Jupiter MOID = 1.91193 au 
 T_jup = 3.260 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456855.5 (2014-Jul-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1089569463975638 2.2029e-08  
q 2.556084169435863 6.6089e-08 au
tp 2457673.369919326987
(2016-Oct-11.86991933)
3.2645e-05 TDB
node 40.65907532658368 1.4974e-06 deg
peri 99.17149658470738 6.2962e-06 deg
i 11.52908941515343 6.0854e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3311  
   data-arc span      41024 days (112.32 yr)  
   first obs. used      1908-11-28  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3979  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:45:55  

Additional Information
 Jupiter MOID = 1.91193 au 
 T_jup = 3.260 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.852690506443214E-16 -1.445174508365676E-15 -3.572149544602224E-13 -9.660475673071284E-15 -1.55693128200563E-14 -1.074784204521019E-15
q -1.445174508365676E-15 4.367762454996421E-15 1.031108617400745E-12 2.821396566275446E-14 3.68230672441725E-14 3.126434813789314E-15
tp -3.572149544602224E-13 1.031108617400745E-12 1.065706638299453E-9 2.612229446277256E-12 1.85510346508366E-10 -9.227665107827162E-13
node -9.660475673071284E-15 2.821396566275446E-14 2.612229446277256E-12 2.242194480199269E-12 -2.097990227896296E-12 6.25790916472055E-13
peri -1.55693128200563E-14 3.68230672441725E-14 1.85510346508366E-10 -2.097990227896296E-12 3.96420310546074E-11 -8.344910176082934E-13
i -1.074784204521019E-15 3.126434813789314E-15 -9.227665107827162E-13 6.25790916472055E-13 -8.344910176082934E-13 3.703253187432767E-13

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 10.96   n/a E2021B10  
diameter diameter 27.037 km 0.242 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.0363 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Ivanova, V.G.; Apostolovska, G.; Borisov, G.B.; Bilkina, B.I. (2002) Proc. ACM 2002, ESA SP 500, 505-508.]
[Pray, D.P.; Galad, A.; Gajdos, S.; Vilagi, J.; et al. (2006) Minor Planet Bull. 33, 92-95.]
[Polishook, D.; Brosch, N. (2009) Icarus 199, 319-332.]
[Apostolovska, G.; Kostov, A.; Bilkina, B.; Ivanova, V.; Donchev, Z. (2011) Bulg. J. Phys. 38, 325-328.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.095   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

698 Ernestina (A910 ED)          Discovered 1910-Mar-05 by Helffrich, J. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A910 ED = A908 WB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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