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 ]  
101910 (1999 RR8)
Classification: Main-belt Asteroid          SPK-ID: 2101910
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1461146983541517 3.3995e-08  
a 2.348071932676444 9.5576e-09 au
q 2.004984110519575 7.9558e-08 au
i 6.438679018965481 4.2957e-06 deg
node 170.7352441390244 3.5258e-05 deg
peri 317.420243380126 3.849e-05 deg
M 200.086888329309 1.5107e-05 deg
tp 2459784.277155575678
(2022-Jul-23.77715558)
5.5831e-05 TDB
period 1314.21228573193
3.60
8.0241e-06
2.197e-08
d
yr
n .2739283477322719 1.6725e-09 deg/d
Q 2.691159754833312 1.0954e-08 au
  Orbit Determination Parameters
   # obs. used (total)      896  
   data-arc span      7627 days (20.88 yr)  
   first obs. used      1999-09-04  
   last obs. used      2020-07-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53571  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:19  

Additional Information
 Earth MOID = 1.02482 au 
 Jupiter MOID = 2.3642 au 
 T_jup = 3.537 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456948.5 (2014-Oct-18.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1463779951283641 3.394e-08  
q 2.003266389593763 7.9431e-08 au
tp 2457155.357166688132
(2015-May-12.85716669)
5.4032e-05 TDB
node 170.8633545224809 3.5331e-05 deg
peri 317.0123694817615 3.8541e-05 deg
i 6.432016231163764 4.2929e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      896  
   data-arc span      7627 days (20.88 yr)  
   first obs. used      1999-09-04  
   last obs. used      2020-07-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53571  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:19  

Additional Information
 Jupiter MOID = 2.3642 au 
 T_jup = 3.537 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.151943469452377E-15 -2.682469634844039E-15 2.216948498436467E-13 -8.151416186451563E-15 5.886631458757311E-14 -6.540272873153528E-16
q -2.682469634844039E-15 6.309354851064329E-15 -5.346063246700784E-13 1.792069142133723E-14 -1.448919764118505E-13 1.495647230960817E-15
tp 2.216948498436467E-13 -5.346063246700784E-13 2.919460759498523E-9 -1.069901909138583E-11 8.459190643414056E-10 -1.451871660653841E-12
node -8.151416186451563E-15 1.792069142133723E-14 -1.069901909138583E-11 1.248299292007E-9 -1.242749509518649E-9 2.239444386849347E-11
peri 5.886631458757311E-14 -1.448919764118505E-13 8.459190643414056E-10 -1.242749509518649E-9 1.485370841734045E-9 -2.264107737452654E-11
i -6.540272873153528E-16 1.495647230960817E-15 -1.451871660653841E-12 2.239444386849347E-11 -2.264107737452654E-11 1.842925521229587E-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 15.76   n/a E2021B55  

101910 (1999 RR8)          Discovered 1999-Sep-04 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 RR8 = 2001 BT59 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-11 08:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin