Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .197259824285919 4.0862e-08  
a 2.328913090562012 7.6067e-09 au
q 1.869512103540573 9.6245e-08 au
i 6.407397896292903 4.3707e-06 deg
node 159.9407037515035 3.341e-05 deg
peri 52.11675050210398 3.4774e-05 deg
M 130.8915736892053 1.1929e-05 deg
tp 2458128.504847542435
(2018-Jan-10.00484754)
4.1612e-05 TDB
period 1298.16037881999
3.55
6.3601e-06
1.741e-08
d
yr
n .2773155042116098 1.3587e-09 deg/d
Q 2.788314077583451 9.1072e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2005  
   data-arc span      27975 days (76.59 yr)  
   first obs. used      1943-03-27  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .526  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:15:50  

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

[ show close-approach data ]
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin