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85448 (1997 GR11)
Classification: Main-belt Asteroid          SPK-ID: 2085448
[ 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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1744689153082424 2.9582e-08  
a 2.243572909097667 7.4145e-09 au
q 1.852139177232439 6.5224e-08 au
i 3.8694681137622 3.6153e-06 deg
node 229.3284855952312 4.9398e-05 deg
peri 84.90812699967249 5.0665e-05 deg
M 220.5953274883436 1.2949e-05 deg
tp 2459475.817208176514
(2021-Sep-18.31720818)		 4.5477e-05 TDB
period 1227.463842212586
3.36		 6.0847e-06
1.666e-08		 d
yr
n .2932876616154134 1.4539e-09 deg/d
Q 2.635006640962894 8.7081e-09 au
   Orbit Determination Parameters
   # obs. used (total)      879  
   data-arc span      8420 days (23.05 yr)  
   first obs. used      1997-04-03  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55275  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:36:58  

Additional Information
 Earth MOID = .843252 au 
 Jupiter MOID = 2.64143 au 
 T_jup = 3.609 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457281.5 (2015-Sep-16.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1751346116095124 2.9638e-08  
q 1.850441787737925 6.5398e-08 au
tp 2457020.326715815323
(2014-Dec-28.82671582)		 3.9439e-05 TDB
node 229.3810336460169 4.9452e-05 deg
peri 84.77296810535297 5.0704e-05 deg
i 3.867118205991984 3.6143e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      879  
   data-arc span      8420 days (23.05 yr)  
   first obs. used      1997-04-03  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55275  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:36:58  

Additional Information
 Jupiter MOID = 2.64143 au 
 T_jup = 3.609 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.78418334664438E-16 -1.930284749122671E-15 2.990130619315396E-13 -5.081619019691331E-16 8.132176942692486E-14 -1.928840937377449E-16
q -1.930284749122671E-15 4.276899323336463E-15 -5.842632365680251E-13 6.994952400925219E-16 -1.57845151591308E-13 4.851905551852589E-16
tp 2.990130619315396E-13 -5.842632365680251E-13 1.555426943826687E-9 4.936152394054353E-13 4.510619493737017E-10 -1.396224660885056E-13
node -5.081619019691331E-16 6.994952400925219E-16 4.936152394054353E-13 2.44554034038966E-9 -2.43951648694459E-9 -2.258426628173312E-11
peri 8.132176942692486E-14 -1.57845151591308E-13 4.510619493737017E-10 -2.43951648694459E-9 2.570920148073652E-9 2.249911885817996E-11
i -1.928840937377449E-16 4.851905551852589E-16 -1.396224660885056E-13 -2.258426628173312E-11 2.249911885817996E-11 1.306307894863496E-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 16.2   n/a MPO449530  
diameter diameter 2.274 km 0.655 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.124   0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85448 (1997 GR11)          Discovered 1997-Apr-03 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)		 Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1969-Jul-31 06:37 < 00:01 Eunom 0.0176957249862852 0.0176945711667211 0.0176968794263512 4.77962982162055 4.77962965564991 2440433.775960930 0.621661312594433 238.507828761694 40.3033390164237 79.9476646669446 64653.9660097409 T 22 CATAB v2.0f-lin.ifort 2020-May-20 15:37:11 2020-May-20 15:37
2154-Jun-09 02:17 00:02 Eunom 0.00976213534621455 0.00975345375434184 0.00977083716284048 4.72913440823427 4.72913410416858 2507951.595414964 2.35734676102479 825.765720606295 39.2564280441685 -58.470733163937 31696.4213379878 T 22 CATAB v2.0f-lin.ifort 2020-May-20 15:37:11 2020-May-20 15:37

Alternate Designations
 1997 GR11 = 1998 VH23 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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