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16843 (1997 XX3)
Classification: Outer Main-belt Asteroid          SPK-ID: 2016843
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1831607383770306 3.7264e-08  
a 3.955820888243754 3.306e-08 au
q 3.231269813465747 1.4906e-07 au
i 5.371858685063157 4.6423e-06 deg
node 158.56968606 4.1769e-05 deg
peri 135.7571689891802 4.3354e-05 deg
M 227.7858647801953 1.3569e-05 deg
tp 2460255.928321464496
(2023-Nov-07.42832146)
0.00011534 TDB
period 2873.778927612758
7.87
3.6025e-05
9.863e-08
d
yr
n .1252705963360415 1.5704e-09 deg/d
Q 4.680371963021761 3.9115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2010  
   data-arc span      15893 days (43.51 yr)  
   first obs. used      1977-09-09  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50647  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:44:04  

Additional Information
 Earth MOID = 2.21643 au 
 Jupiter MOID = .659272 au 
 T_jup = 3.022 
[ 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 12.13   n/a E2021B10  
diameter diameter 16.659 km 0.387 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 275. 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:
[Warner, B.D.; Stephens, R.D.; Coley, D.R. (2017) Minor Planet Bull. 44, 36-41.]
geometric albedo albedo 0.111   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

16843 (1997 XX3)          Discovered 1997-Dec-04 by ODAS at Caussols
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1997 XX3 = 1977 RG20 = 1997 EV39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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