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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
91821 (1999 TN277)
Classification: Main-belt Asteroid          SPK-ID: 2091821
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09363689523344863 5.0525e-08  
a 3.083454532939229 2.7573e-08 au
q 2.794729423881296 1.7128e-07 au
i 10.56828276796284 4.3674e-06 deg
node 102.7422534309619 2.5609e-05 deg
peri 302.375117822664 4.0035e-05 deg
M 338.0716968123219 3.4529e-05 deg
tp 2459516.963999155795
(2021-Oct-29.46399916)
0.00019066 TDB
period 1977.674210581641
5.41
2.6527e-05
7.263e-08
d
yr
n .182032004095418 2.4416e-09 deg/d
Q 3.372179641997161 3.0155e-08 au
  Orbit Determination Parameters
   # obs. used (total)      718  
   data-arc span      7650 days (20.94 yr)  
   first obs. used      1999-10-06  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54634  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:53:26  

Additional Information
 Earth MOID = 1.82211 au 
 Jupiter MOID = 1.97567 au 
 T_jup = 3.194 
[ 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 14.54   n/a E2021B10  
diameter diameter 4.319 km 0.657 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.180   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91821 (1999 TN277)          Discovered 1999-Oct-06 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TN277 = 2000 YV110 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-24 19:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin