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91178 (1998 RV23)
Classification: Main-belt Asteroid          SPK-ID: 2091178
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1485113659102507 6.3375e-08  
a 3.186462171213198 2.612e-08 au
q 2.713236321744983 2.1166e-07 au
i 4.821216254972007 6.7369e-06 deg
node 201.6020070099191 5.2726e-05 deg
peri 177.6348728561849 5.5066e-05 deg
M 276.3289697224088 1.803e-05 deg
tp 2459483.374413115966
(2021-Sep-25.87441312)
0.00010792 TDB
period 2077.598281568001
5.69
2.5545e-05
6.994e-08
d
yr
n .1732770012344742 2.1306e-09 deg/d
Q 3.659688020681413 2.9999e-08 au
  Orbit Determination Parameters
   # obs. used (total)      714  
   data-arc span      7603 days (20.82 yr)  
   first obs. used      1998-08-03  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58303  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:25:09  

Additional Information
 Earth MOID = 1.71555 au 
 Jupiter MOID = 1.80152 au 
 T_jup = 3.175 
[ 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 14.4   n/a MPO348072  
rotation period rot_per 2.75 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

91178 (1998 RV23)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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