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JPL Small-Body Database Browser
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2422 Perovskaya (1968 HK1)
Classification: Main-belt Asteroid          SPK-ID: 2002422
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1972598239770074 4.0834e-08  
a 2.328913090376375 7.5734e-09 au
q 1.869512104110983 9.62e-08 au
i 6.407397771269707 4.256e-06 deg
node 159.9407041191134 3.3315e-05 deg
peri 52.11675057910564 3.4629e-05 deg
M 130.8915734431374 1.1879e-05 deg
tp 2458128.504848486190
(2018-Jan-10.00484849)
4.1404e-05 TDB
period 1298.160378664777
3.55
6.3323e-06
1.734e-08
d
yr
n .2773155042447669 1.3527e-09 deg/d
Q 2.788314076641767 9.0674e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2051  
   data-arc span      28005 days (76.67 yr)  
   first obs. used      1943-03-27  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52159  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:35:24  

Additional Information
 Earth MOID = .872708 au 
 Jupiter MOID = 2.18764 au 
 T_jup = 3.538 
[ 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 13.1   n/a MPO431522  
diameter diameter 5.627 km 0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 40. h n/a LCDB (Rev. 2019-January); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2007) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.186   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

2422 Perovskaya (1968 HK1)          Discovered 1968-Apr-28 by Smirnova, T. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1968 HK1 = 1929 JE = 1936 HF = 1943 GU = 1950 EO = 1950 HO = 1975 GB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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