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92 Undina (A867 NA)
Classification: Main-belt Asteroid          SPK-ID: 2000092
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 100 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1048626485005352 4.0182e-08  
a 3.185178899996894 9.0564e-09 au
q 2.851172604595198 1.3088e-07 au
i 9.932022160426849 4.3039e-06 deg
node 101.5803165956187 2.6665e-05 deg
peri 239.0702968112572 3.3887e-05 deg
M 249.1220811949534 2.2375e-05 deg
tp 2459640.001749371858
(2022-Mar-01.50174937)
0.00012981 TDB
period 2076.343353618128
5.68
8.8555e-06
2.425e-08
d
yr
n .1733817286879276 7.3947e-10 deg/d
Q 3.51918519539859 1.0006e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2530  
   data-arc span      54569 days (149.40 yr)  
   first obs. used      1871-03-09  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46934  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:09:38  

Additional Information
 Earth MOID = 1.85767 au 
 Jupiter MOID = 1.8522 au 
 T_jup = 3.166 
[ 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 6.7   n/a MPO473761 IRAS observations used: 6
diameter diameter 126.42 km 3.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 15.941 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Schober, H.J.; Scaltriti, F.; Zappala, V. (1979) Astron. Astrophys. Suppl. Ser. 36, 1-8.]
[Warner, B.D. (2007) Minor Planet Bull. 34, 72-77.]
[Warner, B.D. (2011) http://www.minorplanetobserver.com/PDO/PDOLightcurves.htm]
[Warner, B.D (2012) Minor Planet Bull. 39, 69-80.]
[Warner, Brian D. (2014) Minor Planet Bull. 41, 230-233.]
geometric albedo albedo 0.2509   0.014 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
B-V BV 0.725   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=2.83, mean=14.49, max.=19.33) deg.
U-B UB 0.275   0.044 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=2.83, mean=14.49, max.=19.33) deg.
Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Xc   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

92 Undina (A867 NA)          Discovered 1867-Jul-07 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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