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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .23361641333908 3.728e-08  
a 2.414655320126752 7.9446e-09 au
q 1.850552204788612 8.9594e-08 au
i 1.463887359553481 4.2196e-06 deg
node 195.8831392521548 0.00012416 deg
peri 164.9247711532397 0.00012434 deg
M 226.3130170528604 6.7576e-06 deg
tp 2459709.441385281882
(2022-May-09.94138528)
2.6926e-05 TDB
period 1370.506646663745
3.75
6.7637e-06
1.852e-08
d
yr
n .2626765808661752 1.2964e-09 deg/d
Q 2.978758435464892 9.8005e-09 au
  Orbit Determination Parameters
   # obs. used (total)      908  
   data-arc span      7895 days (21.62 yr)  
   first obs. used      1999-08-07  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56354  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:10:37  

Additional Information
 Earth MOID = .845948 au 
 Jupiter MOID = 2.47902 au 
 T_jup = 3.479 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457246.5 (2015-Aug-12.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2331733451025844 3.7381e-08  
q 1.852011329026505 8.9823e-08 au
tp 2456964.359067213094
(2014-Nov-02.85906721)
2.3019e-05 TDB
node 195.9758077914001 0.00012481 deg
peri 164.3015943219705 0.00012498 deg
i 1.457505409389224 4.2178e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      908  
   data-arc span      7895 days (21.62 yr)  
   first obs. used      1999-08-07  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56354  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:10:37  

Additional Information
 Jupiter MOID = 2.47902 au 
 T_jup = 3.479 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.397321276805924E-15 -3.350010089699383E-15 -9.434300161981332E-14 9.595181237484521E-16 -2.890113958923646E-14 -1.076029045712242E-15
q -3.350010089699383E-15 8.068111084244218E-15 2.33874342459377E-13 -1.817338368070769E-15 7.220957520091567E-14 2.6008766999296E-15
tp -9.434300161981332E-14 2.33874342459377E-13 5.29884198735174E-10 5.045734302749066E-12 1.584783561525636E-10 1.294238216655706E-13
node 9.595181237484521E-16 -1.817338368070769E-15 5.045734302749066E-12 1.557711581690435E-8 -1.557036494520928E-8 -1.362946125337312E-10
peri -2.890113958923646E-14 7.220957520091567E-14 1.584783561525636E-10 -1.557036494520928E-8 1.562045895320194E-8 1.362903606387546E-10
i -1.076029045712242E-15 2.6008766999296E-15 1.294238216655706E-13 -1.362946125337312E-10 1.362903606387546E-10 1.778985482155136E-11

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-May-17 01:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin