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6044 Hammer-Purgstall (1991 RW4)
Classification: Main-belt Asteroid          SPK-ID: 2006044
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1532738431612749 3.9635e-08  
a 2.776036635434577 1.3095e-08 au
q 2.350542831565024 1.0703e-07 au
i 8.890854241547723 4.7539e-06 deg
node 1.191794506145808 2.1582e-05 deg
peri 308.5446913483495 2.6638e-05 deg
M 119.9452174224052 1.7636e-05 deg
tp 2458437.618918849504
(2018-Nov-15.11891885)
8.1383e-05 TDB
period 1689.414497458129
4.63
1.1953e-05
3.273e-08
d
yr
n .2130915773137092 1.5077e-09 deg/d
Q 3.20153043930413 1.5102e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1853  
   data-arc span      18118 days (49.60 yr)  
   first obs. used      1971-03-24  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4822  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:38:51  

Additional Information
 Earth MOID = 1.34893 au 
 Jupiter MOID = 2.13862 au 
 T_jup = 3.301 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456859.5 (2014-Jul-21.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1556544202216346 3.9832e-08  
q 2.342681192891064 1.0787e-07 au
tp 2456749.506268685986
(2014-Apr-02.00626869)
7.7268e-05 TDB
node 1.245035541975912 2.1544e-05 deg
peri 308.5711438062951 2.6472e-05 deg
i 8.903532647388705 4.7579e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1853  
   data-arc span      18118 days (49.60 yr)  
   first obs. used      1971-03-24  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4822  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:38:51  

Additional Information
 Jupiter MOID = 2.13862 au 
 T_jup = 3.301 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.58662714089022E-15 -4.276464370800875E-15 1.579331087177608E-12 8.46119400824437E-15 2.672164538931601E-13 2.983001111889584E-16
q -4.276464370800875E-15 1.163634769921996E-14 -4.24369731403716E-12 -2.270757048524932E-14 -7.170624355748223E-13 -5.950668345932299E-16
tp 1.579331087177608E-12 -4.24369731403716E-12 5.970351205366678E-9 1.505073168768322E-11 1.19440117180766E-9 -2.882488503862099E-12
node 8.46119400824437E-15 -2.270757048524932E-14 1.505073168768322E-11 4.641243031046351E-10 -4.552285541917141E-10 1.600169725006884E-11
peri 2.672164538931601E-13 -7.170624355748223E-13 1.19440117180766E-9 -4.552285541917141E-10 7.00745375639019E-10 -1.643178993822555E-11
i 2.983001111889584E-16 -5.950668345932299E-16 -2.882488503862099E-12 1.600169725006884E-11 -1.643178993822555E-11 2.263745105872611E-11

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 13.4   n/a MPO439121  

6044 Hammer-Purgstall (1991 RW4)          Discovered 1991-Sep-13 by Borngen and Schmadel at Tautenburg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1991 RW4 = 1977 RF10 = 1987 YN3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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