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5085 Hippocrene (1977 NN)
Classification: Main-belt Asteroid          SPK-ID: 2005085
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1795238732899958 3.4718e-08  
a 2.255947017972381 7.0129e-09 au
q 1.850950671368964 7.7861e-08 au
i 4.85612563969781 3.8336e-06 deg
node 317.0785223780562 3.9199e-05 deg
peri 354.6823655888483 4.0479e-05 deg
M 229.2247749011661 1.2266e-05 deg
tp 2459450.088036376166
(2021-Aug-23.58803638)
4.333e-05 TDB
period 1237.632685954847
3.39
5.771e-06
1.58e-08
d
yr
n .2908779026971609 1.3564e-09 deg/d
Q 2.660943364575799 8.2719e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1733  
   data-arc span      15546 days (42.56 yr)  
   first obs. used      1977-07-14  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50561  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:29:12  

Additional Information
 Earth MOID = .836807 au 
 Jupiter MOID = 2.60521 au 
 T_jup = 3.597 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456866.5 (2014-Jul-28.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1802273483583227 3.479e-08  
q 1.84933644749276 7.8109e-08 au
tp 2456974.294215764350
(2014-Nov-12.79421576)
3.7744e-05 TDB
node 317.1524629061904 3.9156e-05 deg
peri 354.568807793994 4.0425e-05 deg
i 4.859541773742742 3.8357e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1733  
   data-arc span      15546 days (42.56 yr)  
   first obs. used      1977-07-14  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50561  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:29:12  

Additional Information
 Jupiter MOID = 2.60521 au 
 T_jup = 3.597 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.210326906770896E-15 -2.7102029542087E-15 5.413455591991754E-13 8.965027061100631E-15 1.247252339179561E-13 -9.068504755008545E-16
q -2.7102029542087E-15 6.101029871002866E-15 -1.147522615005105E-12 -1.972448492656184E-14 -2.640461606141186E-13 2.057626897161192E-15
tp 5.413455591991754E-13 -1.147522615005105E-12 1.424646584524739E-9 6.055732284841008E-12 3.885005428139517E-10 -1.302504428734168E-12
node 8.965027061100631E-15 -1.972448492656184E-14 6.055732284841008E-12 1.533188245238524E-9 -1.525622438379635E-9 3.792388309455655E-11
peri 1.247252339179561E-13 -2.640461606141186E-13 3.885005428139517E-10 -1.525622438379635E-9 1.634195486797324E-9 -3.813602868275499E-11
i -9.068504755008545E-16 2.057626897161192E-15 -1.302504428734168E-12 3.792388309455655E-11 -3.813602868275499E-11 1.471259844532613E-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 14.2   n/a MPO452237  
diameter diameter 4.018 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.330   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5085 Hippocrene (1977 NN)          Discovered 1977-Jul-14 by Chernykh, N. S. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1977 NN = 1977 PX = 1984 SK5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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