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 ]  
70221 (1999 RZ44)
Classification: Main-belt Asteroid          SPK-ID: 2070221
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2336164069584408 3.7833e-08  
a 2.414655319212641 8.0021e-09 au
q 1.850552219495097 9.0813e-08 au
i 1.463886821903911 4.2574e-06 deg
node 195.8831566443484 0.00012547 deg
peri 164.9247547309436 0.00012565 deg
M 226.313016791261 6.7624e-06 deg
tp 2459709.441385988778
(2022-May-09.94138599)
2.6934e-05 TDB
period 1370.5066458855
3.75
6.8127e-06
1.865e-08
d
yr
n .2626765810153368 1.3058e-09 deg/d
Q 2.978758418930184 9.8715e-09 au
  Orbit Determination Parameters
   # obs. used (total)      904  
   data-arc span      7859 days (21.52 yr)  
   first obs. used      1999-08-07  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56331  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:48:14  

Additional Information
 Earth MOID = .845948 au 
 Jupiter MOID = 2.47902 au 
 T_jup = 3.479 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.00   n/a E2021B10  
diameter diameter 3.252 km 0.693 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.066   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

70221 (1999 RZ44)          Discovered 1999-Sep-11 by Bernasconi, L. at St. Michel sur Me
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-20 02:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin