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 ]  
20964 Mons Naklethi (1977 UA)
Classification: Main-belt Asteroid          SPK-ID: 2020964
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .190288141892089 4.6438e-08  
a 2.383941057341455 8.5678e-09 au
q 1.930305343159688 1.0955e-07 au
i 9.320941382087623 4.2121e-06 deg
node 276.4847396809034 2.6766e-05 deg
peri 134.950964963711 2.8595e-05 deg
M 234.3437201823659 1.1241e-05 deg
tp 2459669.770651423585
(2022-Mar-31.27065142)
4.3419e-05 TDB
period 1344.440840980417
3.68
7.2479e-06
1.984e-08
d
yr
n .2677693127333698 1.4435e-09 deg/d
Q 2.837576771523223 1.0198e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1516  
   data-arc span      16126 days (44.15 yr)  
   first obs. used      1976-05-27  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49018  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:59:41  

Additional Information
 Earth MOID = .953658 au 
 Jupiter MOID = 2.5406 au 
 T_jup = 3.494 
[ 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 14.25   n/a E2021B10  
diameter diameter 3.980 km 0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 16.1054 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.285   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20964 Mons Naklethi           Discovered 1977 Oct. 16 by A. Mrkos at Klet.
Mons Naklethi is the first known name of Klet Mountain, which was mentioned in the Zlatá Koruna monastery's thirteenth-century documents. This minor planet is the first one credited as a Klet discovery. The name was proposed by M. Tichy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1977 UA = 1998 KE26 = 1999 RW195 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-05 02:37 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin