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175115 (2004 RH157)
Classification: Outer Main-belt Asteroid          SPK-ID: 2175115
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1021630232825928 4.2202e-08  
a 3.96631691097816 5.594e-08 au
q 3.561105984055757 1.5665e-07 au
i 7.929399538731436 4.9401e-06 deg
node 281.06327404 4.0504e-05 deg
peri 315.8773805441057 5.0265e-05 deg
M 122.2100736955271 3.1984e-05 deg
tp 2458221.045987946376
(2018-Apr-12.54598795)
0.00025262 TDB
period 2885.22405458798
7.90
6.1039e-05
1.671e-07
d
yr
n .1247736720576487 2.6397e-09 deg/d
Q 4.371527837900564 6.1655e-08 au
  Orbit Determination Parameters
   # obs. used (total)      593  
   data-arc span      7238 days (19.82 yr)  
   first obs. used      2001-03-21  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55463  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:04:05  

Additional Information
 Earth MOID = 2.55366 au 
 Jupiter MOID = .802876 au 
 T_jup = 3.032 
[ 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 13.75   n/a E2021B55  
diameter diameter 10.485 km 0.409 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.064   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

175115 (2004 RH157)          Discovered 2004-Sep-10 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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