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1718 Namibia (1942 RX)
Classification: Main-belt Asteroid          SPK-ID: 2001718
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2771164686091998 1.2046e-08  
a 2.365556984916665 5.5814e-09 au
q 1.710022186962733 2.8008e-08 au
i 7.702596904815358 5.3437e-07 deg
node 202.8279005904567 4.7517e-06 deg
peri 133.631679031687 5.9208e-06 deg
M 192.6020574081155 2.9089e-06 deg
tp 2459818.439793945216
(2022-Aug-26.93979395)
1.2371e-05 TDB
period 1328.919115586925
3.64
4.7033e-06
1.288e-08
d
yr
n .2708968482562643 9.5875e-10 deg/d
Q 3.021091782870597 7.1281e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2257  
   data-arc span      28682 days (78.53 yr)  
   first obs. used      1942-09-07  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48779  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:50:42  

Additional Information
 Earth MOID = .710507 au 
 Jupiter MOID = 2.4262 au 
 T_jup = 3.484 
[ 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 13.85   n/a E2021B10  
diameter diameter 9.747 km 0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.6028 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2011) http://www.asu.cas.cz/~ppravec/neo.htm]
[Ferrero, A. (2012) Minor Planet Bull. 39, 65-67.]
geometric albedo albedo 0.074   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1718 Namibia           Discovered 1942 Sept. 14 by M. Vaisala.
Named for the African country, where the discoverer worked for many years, teaching the children of Finnish missionaries.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5281Last Updated: 2007-10-23

Alternate Designations
 1942 RX = 1953 TV1 = 1953 VB3 = 1964 VL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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