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
JPL Small-Body Database Browser
Search: [ help ]  
101581 (1999 BY7)
Classification: Main-belt Asteroid          SPK-ID: 2101581
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .224223374264939 6.0683e-08  
a 3.195512022635116 3.4583e-08 au
q 2.47900353441569 1.8724e-07 au
i 17.42462931234843 3.5699e-06 deg
node 295.6514742765129 2.1888e-05 deg
peri 98.44888050065235 3.9208e-05 deg
M 331.1395187793087 2.1344e-05 deg
tp 2459167.766965496315
(2020-Nov-14.26696550)
0.00012166 TDB
period 2086.455423879139
5.71
3.3871e-05
9.273e-08
d
yr
n .172541428817438 2.801e-09 deg/d
Q 3.912020510854543 4.2337e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1057  
   data-arc span      8015 days (21.94 yr)  
   first obs. used      1998-11-18  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41831  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:59:43  

Additional Information
 Earth MOID = 1.55841 au 
 Jupiter MOID = 1.86126 au 
 T_jup = 3.086 
[ 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 14.2   n/a MPO366388  
diameter diameter 5.768 km 0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.146   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101581 (1999 BY7)          Discovered 1999-Jan-21 by Korlevic, K. at Visnjan
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 BY7 = 2002 LQ23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-05 00:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin