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1855 Korolev (1969 TU1)
Classification: Main-belt Asteroid          SPK-ID: 2001855
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08469801265797962 3.4739e-08  
a 2.247093675458924 5.371e-09 au
q 2.056769306891238 7.7469e-08 au
i 3.07884765368771 3.8929e-06 deg
node 191.0074653387977 5.6816e-05 deg
peri 349.1168878969761 5.9778e-05 deg
M 219.6492142006709 1.8886e-05 deg
tp 2459480.169981752392
(2021-Sep-22.66998175)
6.4823e-05 TDB
period 1230.354304376731
3.37
4.4112e-06
1.208e-08
d
yr
n .2925986431057903 1.0491e-09 deg/d
Q 2.43741804402661 5.8259e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2831  
   data-arc span      21426 days (58.66 yr)  
   first obs. used      1961-05-11  
   last obs. used      2020-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4529  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:06:25  

Additional Information
 Earth MOID = 1.05963 au 
 Jupiter MOID = 2.52172 au 
 T_jup = 3.623 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456300.5 (2013-Jan-08.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08474772532463429 3.4738e-08  
q 2.056596642327919 7.7467e-08 au
tp 2455789.725388895609
(2011-Aug-16.22538890)
6.3924e-05 TDB
node 191.0913652292211 5.6815e-05 deg
peri 349.415237278928 5.9772e-05 deg
i 3.078472395770631 3.8935e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2831  
   data-arc span      21426 days (58.66 yr)  
   first obs. used      1961-05-11  
   last obs. used      2020-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4529  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:06:25  

Additional Information
 Jupiter MOID = 2.52172 au 
 T_jup = 3.623 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.206711427571204E-15 -2.6856730338811E-15 1.161209959601539E-13 -2.518306390224383E-15 2.956177086580058E-14 -3.438089039803196E-16
q -2.6856730338811E-15 6.001163411751845E-15 -2.767201348371085E-13 5.544905704505444E-15 -6.947362095398558E-14 7.652206900239663E-16
tp 1.161209959601539E-13 -2.767201348371085E-13 4.086218443868507E-9 1.850083862651216E-12 1.193652779460772E-9 -1.807005661910247E-13
node -2.518306390224383E-15 5.544905704505444E-15 1.850083862651216E-12 3.227893517697599E-9 -3.222207628276876E-9 -6.598880077937649E-12
peri 2.956177086580058E-14 -6.947362095398558E-14 1.193652779460772E-9 -3.222207628276876E-9 3.572689204254355E-9 6.54432245293207E-12
i -3.438089039803196E-16 7.652206900239663E-16 -1.807005661910247E-13 -6.598880077937649E-12 6.54432245293207E-12 1.515932856726608E-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 12.8   n/a MPO347532  
diameter diameter 6.789 km 0.253 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 4.6568 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Brinsfield, J. (2008) Minor Planet Bull. 35, 119-122.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.319   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1855 Korolev (1969 TU1)          Discovered 1969-Oct-08 by Chernykh, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1969 TU1 = 1961 JD = 1964 DD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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