Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
6028 (1994 ER1)
Classification: Main-belt Asteroid          SPK-ID: 2006028
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1719294286650972 5.4752e-08  
a 2.572872777602206 1.6357e-08 au
q 2.130520230921078 1.4127e-07 au
i 6.755880998888765 7.5769e-06 deg
node 300.9557144940197 4.2946e-05 deg
peri 310.1413568488819 4.7981e-05 deg
M 53.56570878601156 2.2863e-05 deg
tp 2457176.209824948790
(2015-Jun-02.70982495)
9.5314e-05 JED
period 1507.390919459308
4.13
1.4375e-05
3.936e-08
d
yr
n .2388232510576153 2.2774e-09 deg/d
Q 3.015225324283335 1.9169e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1257  
   data-arc span      16957 days (46.43 yr)  
   first obs. used      1969-03-12  
   last obs. used      2015-08-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50384  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:29:14  

Additional Information
 Earth MOID = 1.12229 au 
 Jupiter MOID = 2.07043 au 
 T_jup = 3.398 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8 mag n/a MPO256908  
rotation period rot_per 3.5278 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

6028 (1994 ER1)          Discovered 1994-Mar-11 by Ueda and Kaneda at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1994 ER1 = 1969 EH = 1981 AS1 = 1987 QQ3 = 1987 SQ26 = 1991 RO13 = 1991 SQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-08 10:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin